@article{Shaoji FENG:1827, author = {Shaoji FENG, Caiheng OUYANG, Quanhua XU, Lixin YAN, Xiangyu ZHOU}, title = {PREFACE}, publisher = {Acta mathematica scientia,Series B}, year = {2021}, journal = {Acta mathematica scientia, Series B}, volume = {41}, number = {6}, eid = {1827}, numpages = {1}, pages = {1827}, keywords = {}, url = {http://121.43.60.238/sxwlxbB/EN/abstract/article_16568.shtml}, doi = {10.1007/s10473-021-0601-7} }