TY  - RPRT
TI  - Simplified goniophotography.
AU  - D B Sloan
AU  - P R Lichter
PY  - 1967
DO  - 10.1016/0002-9394(67)93674-4
UR  - https://pubmed.ncbi.nlm.nih.gov/6027359/
ID  - 6027359
ER  -