中国科学院数学与系统科学研究院期刊网
AMS
Evolutes of Hyperbolic Plane Curves
Shyuichi IZUMIYA, Dong He PEI, Takashi SANO, Erika TORII
Acta Mathematica Sinica . 2004, (3): 543 -550 .  DOI: 10.1007/s10114-004-0301-y