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@article{MZM_1984_36_5_a5, author = {L. A. Belyakov}, title = {Bifurcation of systems with homoclinic curve of a saddle-focus with saddle quantity zero}, journal = {Matemati\v{c}eskie zametki}, pages = {681--689}, publisher = {mathdoc}, volume = {36}, number = {5}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1984_36_5_a5/} }
L. A. Belyakov. Bifurcation of systems with homoclinic curve of a saddle-focus with saddle quantity zero. Matematičeskie zametki, Tome 36 (1984) no. 5, pp. 681-689. http://geodesic.mathdoc.fr/item/MZM_1984_36_5_a5/