TY  - RPRT
TI  - The crystal problem for polytypes.
AU  - D P Varn
AU  - G S Canright
PY  - 2001
DO  - 10.1107/s0108767300010680
UR  - https://pubmed.ncbi.nlm.nih.gov/11124498/
ID  - 11124498
ER  -