(3eHGOF GdHQfGeL (BDBASE IV1.5 / s - (3chGQJ(B, (3QhHQJs; (3eQcR GdJYQjH hGdHQeLIs ((3HjQhJ (B: s (3GdOGQ GdYQHjI ddYdhe , s, 1993)
Keywords: (3GdMGSHGJ GdGdcJQhfjIs; (3GdHQGeLs; (3OHjR ahQ HdGSs