@article{02216132,
title = {Riemann-Hilbert problem and solvability of differential equations.},
journal = {Rendiconti del Seminario Matematico},
volume = {61},
year = {2003},
pages = {183-208},
zbl = {1072.35140},
language = {en},
url = {http://dml.mathdoc.fr/item/02216132}
}
Yoshino, M. Riemann-Hilbert problem and solvability of differential equations.. Rendiconti del Seminario Matematico, Tome 61 (2003) pp. 183-208. http://gdmltest.u-ga.fr/item/02216132/