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@article{GMJ_2000__7_2_48749, author = {Gvazava, J.}, title = {On second order nonlinear equations with rectilinear characteristics.}, journal = {Georgian Mathematical Journal}, pages = {299--316}, publisher = {mathdoc}, volume = {7}, number = {2}, year = {2000}, zbl = {0962.35129}, language = {en}, url = {http://geodesic.mathdoc.fr/item/GMJ_2000__7_2_48749/} }
Gvazava, J. On second order nonlinear equations with rectilinear characteristics.. Georgian Mathematical Journal, Tome 7 (2000) no. 2, pp. 299-316. http://geodesic.mathdoc.fr/item/GMJ_2000__7_2_48749/