%0 Journal Article %A Kamienny, S. %T Modular curves and unramified extensions of number fields %J Compositio Mathematica %D 1982 %P 223-235 %V 47 %N 2 %I Martinus Nijhoff Publishers %U http://www.numdam.org/item/CM_1982__47_2_223_0/ %G en %F CM_1982__47_2_223_0