@article{DE_1997_33_4_a1,
     author = {S. A. Alekseeva and L. P. Shilnikov},
     title = {Bifurcations of periodic motions in systems with a homoclinic saddle-focus loop},
     journal = {Differencialʹnye uravneni\^a},
     pages = {440--447},
     publisher = {mathdoc},
     volume = {33},
     number = {4},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1997_33_4_a1/}
}