.
ӡ . ѡ ޡ .
ѡ ѡ : ( * ) [: 1-2].
ߡ ͡ . . .
!
ʡ ѡ ޡ . ѡ " " !! :
(rilles are still a topic of research )
. . ɡ ! .
ѡ "" ޡ ... .
rilles .
1969 14 ѡ "" . :
! ֡ . . .
. "" . !!!
" " ѡ !! ʡ .
ѡ ɡ .
ɡ .
ѡ ɡ . .
1970 !!! Ralph Juergens ( ) ޡ .
125 ѡ 400 ѡ 1500 . . . !! ѡ .
: ɡ ߿ ѿ . : ... .
ɡ : ( ) [: 56] .
! ޡ ǡ ǡ ѡ : ( ) [: 1]. .