9Geni Gupur 1,3 , LI Xue-zhi 2,3 1.Department of Mathematics, Xinjiang University, Urumqi 830046,China2. Department of Mathematics, Xinyang Teachers College, Henan 464000, China3. Academy of Mathematics and System Sciences, Chinese Academy of Sci.Semigroup Method for a Mathematical Model in Reliability Analysis[J].Journal of Systems Science and Systems Engineering,2001,13(2):137-147. 被引量：14
