Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1985_37_5_a13, author = {V. K. Romanko}, title = {Nonlocal boundary problems for certain systems of equations}, journal = {Matemati\v{c}eskie zametki}, pages = {727--733}, publisher = {mathdoc}, volume = {37}, number = {5}, year = {1985}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1985_37_5_a13/} }
V. K. Romanko. Nonlocal boundary problems for certain systems of equations. Matematičeskie zametki, Tome 37 (1985) no. 5, pp. 727-733. http://geodesic.mathdoc.fr/item/MZM_1985_37_5_a13/