TY  - RPRT
TI  - The Polanret variable densiphase microscope.
AU  - O W Richards
PY  - 1973
DO  - 10.1111/j.1365-2818.1973.tb03805.x
UR  - https://pubmed.ncbi.nlm.nih.gov/4592809/
ID  - 4592809
ER  -