@article{TMF_2009_160_1_a15,
     author = {M. C. Nucci},
     title = {Seeking (and finding) {Lagrangians}},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {168--177},
     year = {2009},
     volume = {160},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2009_160_1_a15/}
}