@article{1183525377,
author = {Lewittes, Joseph},
title = {Gaps at Weierstrass points for the modular group},
journal = {Bull. Amer. Math. Soc.},
volume = {69},
number = {4},
year = {1963},
pages = { 578-582},
language = {en},
url = {http://dml.mathdoc.fr/item/1183525377}
}
Lewittes, Joseph. Gaps at Weierstrass points for the modular group. Bull. Amer. Math. Soc., Tome 69 (1963) no. 4, pp. 578-582. http://gdmltest.u-ga.fr/item/1183525377/