International Symposium Short Wavelengtn Lasers and Their Application.International Symposium Short Wavelengtn Lasers and Their Application(1990 : Samarkand):Short wavelength lasers and their applications.Nova Science Pub.,1992.
Pittsburgh Workshop on Soft Lepton Pair and Photon Production.Pittsburgh Workshop on Soft Lepton Pair and Photon Production (1990 : Pittsburgh):Proceedings.Nova Science Pab,1992.