European Conference on Optics, Optical Systems and Applications.European Conference on Optics, Optical Systems and Applications (1990 : Italy):ECOOSA-Quantum optics : proceedings.IOP,1991.
D. C. Look,J. S. Blakemore,Conference on Semi-insulating III-V materials.Conference on Semi-insulating III-V materials (6th : 1990 : Canada):Semi-insulating III-V Materials , toronto 1990.IOP,1990.
J. G. Daint,Applied Optics and Opto-Electronics Conference.Applied Optics and Opto-Electronics Conference (1st : 1990 : Nollingha):Applied optics digest.IOP,1990.
International Symposium on New Materials and Their Applications.International Symposium on New Materials and Their Applications (2nd : 1990 : University of Warwick):New materials & their applications 1990.IOP Pub.,1990.