|  |   |       e
 
 
 
  
 
 


" .."
5
1.
.., ., ..
, 2021 ., 160, . 6, . 818
PDF (461.3K)

2. ,
.., .., .., ..
, 2017 ., 151, . 1, . 40
PDF (262.3K)

3. - - Fg\rightarrow Fe
4.
5.