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@article{DAN_1985_282_4_a15, author = {R. Ya. Matsyuk}, title = {Lagrangian analysis of invariant third-order equations of motion}, journal = {Doklady Akademii Nauk}, pages = {841--844}, publisher = {mathdoc}, volume = {282}, number = {4}, year = {1985}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1985_282_4_a15/} }
R. Ya. Matsyuk. Lagrangian analysis of invariant third-order equations of motion. Doklady Akademii Nauk, Tome 282 (1985) no. 4, pp. 841-844. http://geodesic.mathdoc.fr/item/DAN_1985_282_4_a15/