TY  - RPRT
TI  - Polymorphism of phosphoric oxide
AU  - W. L. Hill
AU  - G. T. Faust
AU  - S. B. Hendricks
PY  - 2002
DO  - 10.1021/ja01245a018
UR  - https://pubs.usgs.gov/publication/70010951
ID  - 70010951
ER  -