@article{EJDE_2013__2013__a32,
     author = {Potapov, Dmitriy K. and Yevstafyeva, Victoria V.},
     title = {Lavrent'ev problem for separated flows with an external perturbation},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2013},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2013__2013__a32/}
}