@article{EJDE_2014__2014__a80,
     author = {Ioakim, Xenakis},
     title = {Generalized van der {Pol} equation and {Hilbert's} 16th problem},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2014},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2014__2014__a80/}
}