@article{1183525268,
author = {Maskit, Bernard},
title = {On a conjecture concerning planar coverings of surfaces},
journal = {Bull. Amer. Math. Soc.},
volume = {69},
number = {4},
year = {1963},
pages = { 396-398},
language = {en},
url = {http://dml.mathdoc.fr/item/1183525268}
}
Maskit, Bernard. On a conjecture concerning planar coverings of surfaces. Bull. Amer. Math. Soc., Tome 69 (1963) no. 4, pp. 396-398. http://gdmltest.u-ga.fr/item/1183525268/