@incollection{AST_2000__261__201_0,
     author = {Luzzatto, Stefano and Viana, Marcelo},
     title = {Positive {Lyapunov} exponents for {Lorenz-like} families with criticalities},
     booktitle = {G\'eom\'etrie complexe et syst\`emes dynamiques - Colloque en l'honneur d'Adrien Douady Orsay, 1995},
     editor = {Flexor Marguerite and Sentenac Pierrette and Yoccoz Jean-Christophe},
     series = {Ast\'erisque},
     pages = {201--237},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {261},
     year = {2000},
     mrnumber = {1755442},
     zbl = {0944.37025},
     language = {en},
     url = {http://www.numdam.org/item/AST_2000__261__201_0/}
}