@article{PMB_1991____A1_0,
     author = {Schneps, Leila},
     title = {Construction explicite de 2-groupes extra-sp\'eciaux comme groupes de {Galois} sur $\protect \protect \mathbb{Q}(T)$},
     journal = {Publications math\'ematiques de la Facult\'e des sciences de Besan\c{c}on. Th\'eorie des nombres},
     eid = {1},
     pages = {1--7},
     publisher = {Universit\'e de Besan\c{c}on},
     year = {1991},
     doi = {10.5802/pmb.a-62},
     language = {fr},
     url = {http://archive.numdam.org/articles/10.5802/pmb.a-62/}
}