@article{IVM_1971_2_a12,
     author = {\`E. M. Solnechnyi},
     title = {Points of stationarity of functionals of the type of the action integral of a~conservative system},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {96--101},
     publisher = {mathdoc},
     number = {2},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1971_2_a12/}
}