@article{VMUMM_1999_2_a12,
     author = {V. S. Matveev and A. A. Oshemkov},
     title = {Algorithmic classification of invariant neighborhoods of points of saddle-saddle type},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {62--65},
     publisher = {mathdoc},
     number = {2},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1999_2_a12/}
}