@article{VUU_2018_28_3_a7,
     author = {A. I. Safonov and O. V. Kholostova},
     title = {On periodic motions of a symmetrical satellite in an orbit with small eccentricity in the case of multiple combinational resonance of the third and fourth orders},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {373--394},
     year = {2018},
     volume = {28},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VUU_2018_28_3_a7/}
}