@inbook{CIF_1972__7__31_0,
     author = {Payan, J. J.},
     title = {Chapitre {II}},
     booktitle = {Classes d'id\'eaux},
     series = {Cours de l'institut Fourier},
     pages = {31--48},
     publisher = {Institut des Math\'ematiques Pures - Universit\'e Scientifique et M\'edicale de Grenoble},
     number = {7},
     year = {1972},
     url = {http://www.numdam.org/item/CIF_1972__7__31_0/}
}