%0 Journal Article %A Sáez, Eduardo %A Szántó, Iván %T Uniqueness of limit cycles bounded by two invariant parabolas %J Applications of Mathematics %D 2012 %P 521-529 %V 57 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1007/s10492-012-0030-y/ %R 10.1007/s10492-012-0030-y %G en %F 10_1007_s10492_012_0030_y