On the Puzzle of Long and Short Gamma-Ray Bursts
  In this paper we give a brief review of our recent studies on the long and short gamma-ray bursts (GRBs) detected Swift, in an effort to understand the puzzle of classifying GRBs. We consider that it is still an appealing conjecture that both long and short GRBs are drawn from the same parent sample by observational biases. 
Lang Shao (1,2), Fu-Wen Zhang (2,3), Zi-Gao Dai (4), Zhi-Ping Jin (2),   Jing-Zhi Yan (2), Da-Ming Wei (2) (1, Hebei Normal ...
astro-ph.HE astro-ph.CO