%0 Journal Article %A A. Z. Barisov %A Yu. N. Kuznetsov %A E. P. Prokop’ev %T Why is only one positron short liftime observed in semiconductors? %J Doklady Akademii Nauk %D 1978 %P 1082-1085 %V 239 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1978_239_5_a17/ %G ru %F DAN_1978_239_5_a17