中国科学院数学与系统科学研究院期刊网
AMS
A Kinematic Formula for Integral Invariant of Degree 4 in Real Space Form
De Shuo JIANG, Jia Zu ZHOU, Fang Wei CHEN
Acta Mathematica Sinica . 2014, (8): 1465 -1476 .  DOI: 10.1007/s10114-014-1266-0