@article{1259943000,
author = {MORITA, Yasuo},
title = {Hecke polynomials of modular groups and congruence zeta functions of fibre varieties},
journal = {J. Math. Soc. Japan},
volume = {21},
number = {2},
year = {1969},
pages = { 617-637},
language = {en},
url = {http://dml.mathdoc.fr/item/1259943000}
}
MORITA, Yasuo. Hecke polynomials of modular groups and congruence zeta functions of fibre varieties. J. Math. Soc. Japan, Tome 21 (1969) no. 2, pp. 617-637. http://gdmltest.u-ga.fr/item/1259943000/