@article{SM_1990_65_1_a0,
     author = {A. Yu. Kolesov and E. F. Mishchenko},
     title = {Asymptotics of relaxation oscilations},
     journal = {Sbornik. Mathematics},
     pages = {1--17},
     publisher = {mathdoc},
     volume = {65},
     number = {1},
     year = {1990},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1990_65_1_a0/}
}