@article{10_4153_CMB_2006_024_4,
     author = {Gauthier, P. M. and Zeron, E. S.},
     title = {Approximation by {Rational} {Mappings,} via {Homotopy} {Theory}},
     journal = {Canadian mathematical bulletin},
     pages = {237--246},
     year = {2006},
     volume = {49},
     number = {2},
     doi = {10.4153/CMB-2006-024-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2006-024-4/}
}