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@article{SMJ2_2013_39_3-4_a12, author = {Krastanov, M. I. and Ribarska, N. K.}, title = {Viability and an {Olech} {Type} {Result}}, journal = {Serdica Mathematical Journal}, pages = {423--446}, publisher = {mathdoc}, volume = {39}, number = {3-4}, year = {2013}, language = {en}, url = {http://geodesic.mathdoc.fr/item/SMJ2_2013_39_3-4_a12/} }
Krastanov, M. I.; Ribarska, N. K. Viability and an Olech Type Result. Serdica Mathematical Journal, Tome 39 (2013) no. 3-4, pp. 423-446. http://geodesic.mathdoc.fr/item/SMJ2_2013_39_3-4_a12/