6Rajagopal KR.Computer Aided Design of a Hysteresis Motor Used in Space Application.Digest of INTERMAG 2003.Intematioonl Magnetic Conference(Cat.No.03CH37401)[J].IEEE.2003,pp.ER-03.Piscataway,NJ,USA
7Joan-Arinyo R,Luzon M V. Genetic algorithms for root multiselectionin constructive geometric constraint solving[J].computers&graphics,2003(27) :51-65.