@article{1256052613,
author = {Dennin, Joseph B.},
title = {Fields of modular functions of genus $0$},
journal = {Illinois J. Math.},
volume = {15},
number = {4},
year = {1971},
pages = { 442-455},
language = {en},
url = {http://dml.mathdoc.fr/item/1256052613}
}
Dennin, Joseph B. Fields of modular functions of genus $0$. Illinois J. Math., Tome 15 (1971) no. 4, pp. 442-455. http://gdmltest.u-ga.fr/item/1256052613/