TY  - RPRT
TI  - A method to detect proteinase activity using unprocessed X-ray films.
AU  - A L Cheung
AU  - P Ying
AU  - V A Fischetti
PY  - 1991
DO  - 10.1016/0003-2697(91)90037-t
UR  - https://pubmed.ncbi.nlm.nih.gov/1804124/
ID  - 1804124
ER  -