中国科学院数学与系统科学研究院期刊网
AMS
Spacelike Framed Curves with Lightlike Components and Singularities of Their Evolutes and Focal Surfaces in Minkowski 3-space
Peng Cheng LI, Dong He PEI, Xin ZHAO
Acta Mathematica Sinica . 2024, (6): 1521 -1532 .  DOI: 10.1007/s10114-023-1672-2