https://dds.las.ac.cn/service/document?appId=a1vacbnPuv9qJRzJvdNXfsesj9JbIa6e&appKey=sPBA4vANLzjnW1k5eufEcc4k7dxfNraW&ts=1763013334764&signature=5995ddfec7e1c035b40699d0e96c53d2&articleTitle=Topics+in+Group+Theory&articleAuthor=Geoff+Smith%2C+Olga+Tabachnikova&publicationTitle=Topics+in+Group+Theory&language=&publicationType=1&publishYear=2000&isn=9781852332358&publisher=Springer+London