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@article{MT_1987_7_a10, author = {\`E. R. Tsekanovskii}, title = {The characteristic function and sectorial boundary value problems}, journal = {Matemati\v{c}eskie trudy}, pages = {180--194}, publisher = {mathdoc}, volume = {7}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MT_1987_7_a10/} }
È. R. Tsekanovskii. The characteristic function and sectorial boundary value problems. Matematičeskie trudy, Tome 7 (1987), pp. 180-194. http://geodesic.mathdoc.fr/item/MT_1987_7_a10/