@article{IM2_2013_77_2_a3,
     author = {E. I. Kaikina and P. I. Naumkin and I. A. Shishmarev},
     title = {Asymptotic expansion of solutions to the periodic problem for a~non-linear {Sobolev-type} equation},
     journal = {Izvestiya. Mathematics },
     pages = {313--324},
     publisher = {mathdoc},
     volume = {77},
     number = {2},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2013_77_2_a3/}
}