中国科学院数学与系统科学研究院期刊网
Complete Space-like λ-surfaces in the Minkowski Space R13 with the Second Fundamental Form of Constant Length
Xing Xiao LI, Yang Yang LIU, Rui Na QIAO
Acta Mathematica Sinica . 2020, (5): 559 -577 .  DOI: 10.1007/s10114-020-9078-x