1SHEN GuangJun 1,2,& YAN LiTan 3 1 Department of Mathematics,East China University of Science and Technology,Shanghai 200237,China,2 Department of Mathematics,Anhui Normal University,Wuhu 241000,China,3 Department of Mathematics,Donghua University,Shanghai 201620,China.Smoothness for the collision local times of bifractional Brownian motions[J].Science China Mathematics,2011,54(9):1859-1873. 被引量:12