@article{MZM_1974_16_3_a16,
     author = {I. T. Kiguradze and N. R. Lezhava},
     title = {The problem of the solvability of nonlinear two-point boundary-value problems},
     journal = {Matemati\v{c}eskie zametki},
     pages = {479--490},
     publisher = {mathdoc},
     volume = {16},
     number = {3},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1974_16_3_a16/}
}