% Identical to gral.bib but the key ishihara2012 is repeated
% (it appears first as an article and then as inproceedings)

@article{rashid2016,
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  year={2016},
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}

@inproceedings{reinhardt_wireless_2014,
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	volume = {13},
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@techreport{priyantha_anchor-free_2003,
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@inproceedings{sadler_synchronization_2006,
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	year = {2006}
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@inproceedings{lin_sida:_2007,
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@techreport{dawoud_gnss_2012,
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@inproceedings{parker_refined_2004,
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@article{singh_range_2015,
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@article{rault_energy_2014,
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@article{mao_wireless_2007,
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@article{buratti_overview_2009,
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@misc{banks_mqtt_2014,
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@techreport{souza_survey_2007,
	location = {Karlsruhe, {DE}},
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@inproceedings{rao_geographic_2003,
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@inproceedings{he_range-free_2003,
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	booktitle = {Proceedings of the 9th Annual International Conference on Mobile Computing and Networking},
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@article{mclaren_families_2016,
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@techreport{muller_towards_2004,
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@book{strong_psychology_1925,
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@inproceedings{nassiraei2007,
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@inproceedings{kim2010,
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@article{tuatar2007,
  title={Development of mobile minirobots for in pipe inspection tasks.},
  author={T{\u{a}}tar, O and Mandru, D and Ardelean, I},
  journal={Mechanika},
  volume={68},
  number={6},
  year={2007}
}

@inproceedings{krys2007,
  title={Development of visual simultaneous localization and mapping (VSLAM) for a pipe inspection robot},
  author={Krys, Dennis and Najjaran, Homayoun},
  booktitle={2007 International Symposium on Computational Intelligence in Robotics and Automation},
  pages={344--349},
  year={2007},
  organization={IEEE}
}

@inproceedings{bando2016,
  title={Sound-based online localization for an in-pipe snake robot},
  author={Bando, Yoshiaki and Suhara, Hiroki and Tanaka, Motoyasu and Kamegawa, Tetsushi and Itoyama, Katsutoshi and Yoshii, Kazuyoshi and Matsuno, Fumitoshi and Okuno, Hiroshi G},
  booktitle={2016 IEEE International Symposium on Safety, Security, and Rescue Robotics (SSRR)},
  pages={207--213},
  year={2016},
  organization={IEEE}
}

@inproceedings{seco2016,
  title={A robot localization system based on rf fadings using particle filters inside pipes},
  author={Seco, Teresa and Rizzo, Carlos and Espelos{\'\i}n, Jes{\'u}s and Villarroel, Jos{\'e} Luis},
  booktitle={2016 International Conference on Autonomous Robot Systems and Competitions (ICARSC)},
  pages={28--34},
  year={2016},
  organization={IEEE}
}

@inproceedings{ma2017,
  title={PipeSLAM: Simultaneous localisation and mapping in feature sparse water pipes using the Rao-Blackwellised particle filter},
  author={Ma, Ke and Schirru, Michele and Zahraee, Ali Hassan and Dwyer-Joyce, Rob and Boxall, Joby and Dodd, Tony J and Collins, Richard and Anderson, Sean R},
  booktitle={2017 IEEE International Conference on Advanced Intelligent Mechatronics (AIM)},
  pages={1459--1464},
  year={2017},
  organization={IEEE}
}

@article{ishihara2012,
  title={Active node selection in flowing wireless sensor networks},
  author={Ishihara, Susumu and Sato, Daisuke},
  journal={Proc. 6th ICMU},
  pages={8--15},
  year={2012}
}

@inproceedings{nagashima2015,
  title={Measurement of wireless communication characteristics in sewer pipes for sewer inspection systems using multiple wireless sensor nodes},
  author={Nagashima, Taiki and Tanaka, Yudai and Ishihara, Susumu},
  booktitle={2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)},
  pages={2055--2060},
  year={2015},
  organization={IEEE}
}

@inproceedings{mitake2013,
  title={A basic study of data collection ratio of drifting sensor networks for monitoring waterways},
  author={Mitake, Kazuma and Ishihara, Susumu},
  booktitle={2013 27th International Conference on Advanced Information Networking and Applications Workshops},
  pages={13--20},
  year={2013},
  organization={IEEE}
}

@inproceedings{kim2009,
  title={Sewersnort: A drifting sensor for in-situ sewer gas monitoring},
  author={Kim, Jihyoung and Lim, Jung Soo and Friedman, Jonathan and Lee, Uichin and Vieira, Luiz and Rosso, Diego and Gerla, Mario and Srivastava, Mani B},
  booktitle={2009 6th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks},
  pages={1--9},
  year={2009},
  organization={IEEE}
}

@article{almazyad2014,
  title={A proposed scalable design and simulation of wireless sensor network-based long-distance water pipeline leakage monitoring system},
  author={Almazyad, Abdulaziz S and Seddiq, Yasser M and Alotaibi, Ahmed M and Al-Nasheri, Ahmed Y and BenSaleh, Mohammed S and Obeid, Abdulfattah M and Qasim, Syed Manzoor},
  journal={Sensors},
  volume={14},
  number={2},
  pages={3557--3577},
  year={2014},
  publisher={Multidisciplinary Digital Publishing Institute}
}

@article{abbas2018,
author = {Muhammad Zahid Abbas  and Kamarulnizam Abu Baker  and Muhammad Ayaz  and Hafiz Mohamed  and Moeenuddin Tariq  and Adnan Ahmed  and Muhammad Faheem },
title = {Key Factors Involved in Pipeline Monitoring Techniques Using Robots and WSNs: Comprehensive Survey},
journal = {Journal of Pipeline Systems Engineering and Practice},
volume = {9},
number = {2},
year = {2018},
abstract = {Sensor networks have gained tremendous appreciation in recent years and have been successfully tested in various application scenarios such as disaster management, pipeline monitoring, and environmental monitoring, as well as different military and security-based applications. In order to protect pipelines from leakage and corrosion, various conventional methods and techniques are used for monitoring. Functioning only in a specific environment, these conventional techniques require special infrastructure and higher maintenance. These challenges could, however, be overcome efficiently by using wireless sensors and robots. Most previous surveys mainly focused on the hardware design of the sensors, basic sensing techniques, and transmission media, but overlooked conducting an exclusive survey of pipeline monitoring schemes using linearly deployed wireless sensor networks or robots. This study attempts to carry out an extensive survey on the factors affecting pipeline monitoring techniques and provides novel classification in terms of classifying them into different strategies, sensor types, sensing coverage, communication methods, and monitoring types. In addition, a survey of comparative analysis of existing pipeline monitoring techniques is also presented, and general pipeline monitoring methods are also compared and summarized. Moreover, the need to explore pipeline monitoring schemes that incorporate wireless sensor networks (WSNs) is highlighted because WSNs are easy to deploy and flexible enough to be installed in any environment. This study discovers that most existing pipeline monitoring schemes that do not deploy sensors in a linear direction, which ultimately increases the cost and reduces overall network performance. Finally, several unresolved issues occurring in the development of pipeline monitoring techniques are highlighted, and future directions are provided accordingly. }
}

@inproceedings{ishihara2012,
  title={Active node selection in flowing wireless sensor networks},
  author={Ishihara, Susumu and Sato, Daisuke},
  booktitle={Proceedings of the 6th International Conference on Mobile Computing and Ubiquitous Networking (IMCU)},
  pages={8--15},
  year={2012}
}

@ARTICLE{adedeji2017,
  author={K. B. {Adedeji} and Y. {Hamam} and B. T. {Abe} and A. M. {Abu-Mahfouz}},
  journal={IEEE Access},
  title={Towards Achieving a Reliable Leakage Detection and Localization Algorithm for Application in Water Piping Networks: An Overview},
  year={2017},
  volume={5},
  number={},
  pages={20272-20285}
}