@article{1077313725,
author = {Jochnowitz, Naomi},
title = {The index of the Hecke ring, $\mathrm{T}\_k$ , in the ring of integers of $\mathrm{T}\_k \otimes \mathbf{Q}$},
journal = {Duke Math. J.},
volume = {46},
number = {1},
year = {1979},
pages = { 861-869},
language = {en},
url = {http://dml.mathdoc.fr/item/1077313725}
}
Jochnowitz, Naomi. The index of the Hecke ring, $\mathrm{T}_k$ , in the ring of integers of $\mathrm{T}_k \otimes \mathbf{Q}$. Duke Math. J., Tome 46 (1979) no. 1, pp. 861-869. http://gdmltest.u-ga.fr/item/1077313725/