@article{FPM_1997_3_4_a15,
     author = {A. B. Vasil'eva and V. A. Anikeeva},
     title = {Contrast structure in the systems of singulary perturbed equations},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {1117--1133},
     publisher = {mathdoc},
     volume = {3},
     number = {4},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_1997_3_4_a15/}
}