@incollection{AST_1976__31__43_0,
     author = {Newhouse, S. and Palis, J.},
     title = {Cycles and bifurcation theory},
     booktitle = {Trois \'etudes en dynamique qualitative},
     series = {Ast\'erisque},
     pages = {43--140},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {31},
     year = {1976},
     mrnumber = {516408},
     zbl = {0322.58009},
     language = {en},
     url = {http://www.numdam.org/item/AST_1976__31__43_0/}
}