67 17- 18 . , , , , . , . () - - , , .
, , , , . , ( ) , - , . .
( ) . , , . , .
.. (1996) .. (1981, 1985), .. .. (1999) , (.9, 10).
( ) . , . 11, 12, 13 , , 717 [6].
(.., .. , .., .., . . ) -, (, ) 17 ( ) .
, .
1. 1000 . .
2. 10 5 . , .
3. (). .
4. (). .
5. 30 . - .
6. . .
(. 14) II ( , 1996).
, 15% . - .