TY  - RPRT
TI  - Single-ring polanret phase-contrast system.
AU  - M Pluta
PY  - 1987
DO  - 10.1111/j.1365-2818.1987.tb02851.x
UR  - https://pubmed.ncbi.nlm.nih.gov/3323523/
ID  - 3323523
ER  -