The Structure of a Group Biproduct
In this paper we mainly give the necessary and sufficient conditonsfor a group biproduct to be a Hopf group coalgebra and state some properties such as group integrals ,grouplike elements and cosemisimplicity.
Shaobo Zhong, Yimin Cheng and Xilong Qu
X. Y. Jiang et al., "The Structure of a Group Biproduct", Applied Mechanics and Materials, Vols. 50-51, pp. 818-822, 2011