@article{AFST_2016_6_25_1_1_0,
     author = {Bedford, Eric and Firsova, Tanya},
     title = {Geometric proof of the $\lambda ${-Lemma}},
     journal = {Annales de la Facult\'e des sciences de Toulouse : Math\'ematiques},
     pages = {1--18},
     publisher = {Universit\'e Paul Sabatier, Toulouse},
     volume = {Ser. 6, 25},
     number = {1},
     year = {2016},
     doi = {10.5802/afst.1485},
     mrnumber = {3485289},
     zbl = {1341.30007},
     language = {en},
     url = {http://archive.numdam.org/articles/10.5802/afst.1485/}
}