中国科学院数学与系统科学研究院期刊网
On Extension of Isometries Between the Unit Spheres of Normed Space E and lp(p>1)
Ji Jin YI, Rui Dong WANG
Acta Mathematica Sinica . 2009, (7): 1139 -1144 .  DOI: 10.1007/s10114-009-7376-4