@article{MMO_2013_74_1_a3,
     author = {M. N. Davletshin},
     title = {Hill{\textquoteright}s formula for $g$-periodic trajectories of {Lagrangian} systems},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {75--113},
     publisher = {mathdoc},
     volume = {74},
     number = {1},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_2013_74_1_a3/}
}