@article{PMB_1991____A1_0,
     author = {Leila Schneps},
     title = {Construction explicite de 2-groupes extra-sp\'eciaux comme groupes de {Galois} sur $\protect \protect \mathbb{Q}(T)$},
     journal = {Publications math\'ematiques de Besan\c{c}on. Alg\`ebre et th\'eorie des nombres},
     eid = {1},
     pages = {1--7},
     publisher = {Presses universitaires de Franche-Comt\'e},
     year = {1991},
     doi = {10.5802/pmb.a-62},
     language = {fr},
     url = {https://pmb.centre-mersenne.org/articles/10.5802/pmb.a-62/}
}