@article{10_4153_CJM_2002_038_6,
     author = {Gavrilov, Lubomir and Iliev, Iliya D.},
     title = {Bifurcations of {Limit} {Cycles} {From} {Infinity} in {Quadratic} {Systems}},
     journal = {Canadian journal of mathematics},
     pages = {1038--1064},
     year = {2002},
     volume = {54},
     number = {5},
     doi = {10.4153/CJM-2002-038-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2002-038-6/}
}