@article{10_1023_A_1023080513150,
     author = {Lichardov\'a, Hana},
     title = {Limit cycles in the equation of whirling pendulum with autonomous perturbation},
     journal = {Applications of Mathematics},
     pages = {271--288},
     publisher = {mathdoc},
     volume = {44},
     number = {4},
     year = {1999},
     doi = {10.1023/A:1023080513150},
     mrnumber = {1698769},
     zbl = {1060.34504},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1023/A:1023080513150/}
}