|  |   |       e
 
 
 
  
 
 


, 131, . 5, . 808 ( 2007)
( - JETP, Vol. 104, No 5, p. 704, May 2007 on-line www.springer.com )


.., ..

: 25 2006

PACS: 52.25.Dg, 52.80.-s, 52.90.+z, 52.80.Tn

DJVU (115K) PDF (296.5K)

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