https://dds.las.ac.cn/service/document?appId=a1vacbnPuv9qJRzJvdNXfsesj9JbIa6e&appKey=sPBA4vANLzjnW1k5eufEcc4k7dxfNraW&ts=1763013096761&signature=519e29181465c14cfa30431ae05d5a09&articleTitle=Graded+Syzygies&articleAuthor=Irena+Peeva&publicationTitle=Graded+Syzygies&language=&publicationType=1&publishYear=2011&isn=9780857291769&publisher=Springer+London