@article{AMBP_2001__8_1_93_0,
     author = {Mansilla, Ang\'elica and Saavedra, Mariana},
     title = {The period function near a polycycle with two semi-hyperbolic vertices},
     journal = {Annales math\'ematiques Blaise Pascal},
     pages = {93--104},
     publisher = {Laboratoires de Math\'ematiques Pures et Appliqu\'ees de l'Universit\'e Blaise Pascal},
     volume = {8},
     number = {1},
     year = {2001},
     mrnumber = {1863649},
     zbl = {01690886},
     language = {en},
     url = {http://archive.numdam.org/item/AMBP_2001__8_1_93_0/}
}