@article{MZM_2000_67_6_a4,
     author = {A. I. Gerko},
     title = {Asymptotically recurrent solutions to $\beta$-differential equations},
     journal = {Matemati\v{c}eskie zametki},
     pages = {837--851},
     publisher = {mathdoc},
     volume = {67},
     number = {6},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2000_67_6_a4/}
}