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					             Information about author 
            
            
 Spivak Semyon IzrailevichDr. , Professor
Position:   Head of Chair 
Office: Bashkir State University 
Address:   450076, Russia, Ufa, 32 Zaki Validi Str. 
Phone Office:   (347) 273-73-34 
E-mail:   semen.spivak@mail.ru 
SPIN-code:   3371-6413 
 
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