Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_2005_77_5_a0, author = {I. V. Vyugin}, title = {Constructive {Solvability} {Conditions} for the {Riemann--Hilbert} {Problem}}, journal = {Matemati\v{c}eskie zametki}, pages = {643--655}, publisher = {mathdoc}, volume = {77}, number = {5}, year = {2005}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_2005_77_5_a0/} }
I. V. Vyugin. Constructive Solvability Conditions for the Riemann--Hilbert Problem. Matematičeskie zametki, Tome 77 (2005) no. 5, pp. 643-655. http://geodesic.mathdoc.fr/item/MZM_2005_77_5_a0/