@article{SEMR_2020_17_a100,
     author = {Saad Eddine Hamizi and Rachid Boukoucha},
     title = {A class of planar differential systems with explicit expression for two limit cycles},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {1588--1597},
     publisher = {mathdoc},
     volume = {17},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2020_17_a100/}
}