@article{EJDE_2013__2013__a33,
     author = {Cao,  Jianzhi and Yuan,  Rong},
     title = {Bogdanov-Takens bifurcation for neutral functional differential equations},
     journal = {Electronic journal of differential equations},
     year = {2013},
     volume = {2013},
     zbl = {1293.34089},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2013__2013__a33/}
}