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LEOS`91,Lasers and Electro-Optics Society annual meeting conference proceedings.Lasers and Electro-Optics Society annual meeting conference (1991 : San Jose):LEOS`91.IEEE,1991.
LEOS`90,Lasers and Electro-Optics Society annual meeting conference proceedings.Lasers and Electro-Optics Society annual meeting conference (1990 : Boston):LEOS`90.IEEE,1990.