@article{IM2_2009_73_6_a4,
     author = {E. I. Kaikina and P. I. Naumkin and I. A. Shishmarev},
     title = {A~boundary-value problem for a~non-linear equation with a~fractional derivative},
     journal = {Izvestiya. Mathematics },
     pages = {1173--1196},
     publisher = {mathdoc},
     volume = {73},
     number = {6},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2009_73_6_a4/}
}