@article{ZVMMF_1989_29_2_a4,
     author = {Yu. B. Suris},
     title = {The canonicity of mappings generated by {Runge{\textendash}Kutta} type methods when integrating the systems $\ddot x=-\partial U/\partial x$},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {202--211},
     publisher = {mathdoc},
     volume = {29},
     number = {2},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1989_29_2_a4/}
}