TY  - RPRT
TI  - [Theoretical and practical vision quality with diffractive-multifocal lenses].
AU  - W Niederer
PY  - 1991
DO  - 10.1055/s-2008-1045989
UR  - https://pubmed.ncbi.nlm.nih.gov/1886365/
ID  - 1886365
ER  -