@article{DE_2003_39_2_a9,
     author = {L. M. Fridman},
     title = {Application of the {Boundary} {Function} {Method} to {Finding} {Slow} {Periodic} {Solutions} of {Singularly} {Perturbed} {Bang-Bang} {Systems}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {236--245},
     publisher = {mathdoc},
     volume = {39},
     number = {2},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2003_39_2_a9/}
}