@article{MM_1990_2_3_a4,
     author = {I. V. Amirkhanov and E. P. Zhidkov and I. E. Zhidkova},
     title = {Averaging equations of betatron oscillations in the vicinity of resonances in cyclic accelerators},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {43--54},
     publisher = {mathdoc},
     volume = {2},
     number = {3},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_1990_2_3_a4/}
}