@article{INTA_1978_16_a3, author = {\`E. B. Vinberg and O. V. Schwarzman}, title = {Riemann surfaces}, journal = {Itogi Nauki i Tekhniki. Seriya Algebra. Geometriya. Topologiya}, pages = {191--245}, year = {1978}, volume = {16}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/INTA_1978_16_a3/} }