TY  - RPRT
TI  - Quantitative tear ferning. Methodologic and experimental investigations.
AU  - M Norn
PY  - 1988
DO  - 10.1111/j.1755-3768.1988.tb04012.x
UR  - https://pubmed.ncbi.nlm.nih.gov/3389095/
ID  - 3389095
ER  -