@article{SM_1991_70_1_a0,
     author = {A. Yu. Kolesov and E. F. Mishchenko},
     title = {The {Pontryagin} delay phenomenon and stable ducktrajectories for multidimensional relaxation systems with one slow variable},
     journal = {Sbornik. Mathematics},
     pages = {1--10},
     publisher = {mathdoc},
     volume = {70},
     number = {1},
     year = {1991},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1991_70_1_a0/}
}