| | 0.5 | | 4 | 3- | . | 1 | | 5 | | . | 1 | | 6 | | . | 10 | | 7 | | . | 3 | | 8 | | . | 3 | | 9 | 100 | . | 20 | |10 | d=1.6 | | 30 | |11 | | . | 1 | +----------------------------------------------------------+ : 3.0 4. . ..  . 1. 5 .. - - - , ., 1988 . 2. "" , N 5 1989 . 3. . 15 , . 4. "" , n 7 1987 . , " - ". 5. .. " " , ., 1961 . 6. . ., , 1967 7. . . , 1970 . 8. . "", 1965 . 9. ., ., . . , 1959 .