@article{ND_2016_12_4_a2,
     author = {A. D. Morozov and K. E. Morozov},
     title = {Transitory shift in pendular type equations},
     journal = {Russian journal of nonlinear dynamics},
     pages = {577--589},
     year = {2016},
     volume = {12},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ND_2016_12_4_a2/}
}