https://dds.las.ac.cn/service/document?appId=a1vacbnPuv9qJRzJvdNXfsesj9JbIa6e&appKey=sPBA4vANLzjnW1k5eufEcc4k7dxfNraW&ts=1763055149410&signature=dc2368f3b5f35006ce18b64e9171d4b7&articleTitle=Solvability+Theory+of+Boundary+Value+Problems+and+Singular+Integral+Equations+with+Shift&articleAuthor=Georgii+S.+Litvinchuk&publicationTitle=Solvability+Theory+of+Boundary+Value+Problems+and+Singular+Integral+Equations+with+Shift&language=&publicationType=1&publishYear=2000&isn=9780792365495&publisher=Springer+Netherlands