@article{VMUMM_1983_1_a9,
     author = {T. N. Sysoeva},
     title = {A singularly perturbed system of first-order partial differential equations},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {37--41},
     publisher = {mathdoc},
     number = {1},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1983_1_a9/}
}