@article{10_1007_s10587_013_0016_2,
     author = {Mukhigulashvili, Sulkhan},
     title = {The {Dirichlet} boundary value problems for strongly singular higher-order nonlinear functional-differential equations},
     journal = {Czechoslovak Mathematical Journal},
     pages = {235--263},
     publisher = {mathdoc},
     volume = {63},
     number = {1},
     year = {2013},
     doi = {10.1007/s10587-013-0016-2},
     mrnumber = {3035509},
     zbl = {1274.34189},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10587-013-0016-2/}
}