TY  - RPRT
TI  - SQUARE-INTEGRABLE DIFFERENTIALS ON OPEN RIEMANN SURFACES.
AU  - L V Ahlfors
PY  - 1956
DO  - 10.1073/pnas.42.10.758
UR  - https://pubmed.ncbi.nlm.nih.gov/16589944/
ID  - 16589944
ER  -