参考文献

Pinney, Kevin G.; Mocharla, Vani P.; Chen, Zhi; Garner, Charles M.; Ghatak, Anjan; Hadimani, Mallinath; Kessler, Jimmy; Dorsey, James M.; Edvardsen, Klaus; Chaplin, David J.; Prezioso, Joseph; Ghatak, Usha R. Patent:   US2004/43969 A1, 2004 ;