@article{VSGTU_2013_1_a36,
     author = {M. G. Ivanov},
     title = {Phase space curvature},
     journal = {Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences},
     pages = {361--368},
     publisher = {mathdoc},
     number = {1},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGTU_2013_1_a36/}
}