@phdthesis{BJHTUP11_2004__0659__A1_0,
     author = {Fischer, V\'eronique},
     title = {\'Etude de deux classes de groupes nilpotents de pas deux},
     series = {Th\`eses d'Orsay},
     publisher = {Universit\'e Paris-Sud UFR Scientifique d'Orsay},
     number = {659},
     year = {2004},
     language = {fr},
     url = {http://www.numdam.org/item/BJHTUP11_2004__0659__A1_0/}
}