@article{TMF_1980_44_2_a4,
     author = {R. P. Gaida and Yu. B. Klyuchkovskii and V. I. Tretyak},
     title = {Lagrangian classical relativistic mechanics of~a~system of~directly interacting {particles.~I}},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {194--208},
     publisher = {mathdoc},
     volume = {44},
     number = {2},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1980_44_2_a4/}
}