@article{DE_1976_12_12_a2,
     author = {I. T. Kiguradze and B. Puzha},
     title = {Certain boundary value problems for a system of ordinary differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2139--2148},
     publisher = {mathdoc},
     volume = {12},
     number = {12},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1976_12_12_a2/}
}