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@article{DE_2004_40_1_a7, author = {O. M. Dzhokhadze}, title = {Laplace {Invariants} for {Some} {Classes} of {Linear} {Partial} {Differential} {Equations}}, journal = {Differencialʹnye uravneni\^a}, pages = {58--68}, publisher = {mathdoc}, volume = {40}, number = {1}, year = {2004}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_2004_40_1_a7/} }
O. M. Dzhokhadze. Laplace Invariants for Some Classes of Linear Partial Differential Equations. Differencialʹnye uravneniâ, Tome 40 (2004) no. 1, pp. 58-68. http://geodesic.mathdoc.fr/item/DE_2004_40_1_a7/