@article{VMUMM_1991_3_a16,
     author = {P. N. Savel'ev},
     title = {On the {Poincar\'e--Bendixon} theorem and dissipativity in the plane},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {69--71},
     publisher = {mathdoc},
     number = {3},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1991_3_a16/}
}