TY  - RPRT
TI  - Optical aids and their application.
AU  - F Fankhauser
AU  - P Rol
AU  - S Kwasniewska
PY  - 1990
DO  - 10.1097/00004397-199030020-00010
UR  - https://pubmed.ncbi.nlm.nih.gov/2185174/
ID  - 2185174
ER  -