TY  - RPRT
TI  - Astigmatism in gonioscopy.
AU  - U Halldén
PY  - 1982
DO  - 10.1111/j.1755-3768.1982.tb06734.x
UR  - https://pubmed.ncbi.nlm.nih.gov/7164791/
ID  - 7164791
ER  -