# crystallographic-group

Implemented using the `Hall-symbol` notations. Inspired by: `sginfo` and `hall-symbol`.

## Reference

1. Concise Space-Group Symbols <http://cci.lbl.gov/sginfo/hall_symbols.html>, See also `sginfo`: <https://github.com/rwgk/sginfo>

1. Space-Group Notation with an Explicit Origin S.R. Hall; Space-Group Notation with an Explicit Origin ; Acta Cryst. (1981). A37, 517-525

1. ITVB 2001 Table A1.4.2.7 Hall symbols <http://cci.lbl.gov/sginfo/itvb_2001_table_a1427_hall_symbols.html>

1. `hall-symbols` (in Haskell): <https://github.com/narumij/hall-symbols>