%0 Journal Article %A Yu. A. Novikov %A A. V. Rakov %A M. K. Filimonov %A V. P. Shantarovich %T Role of positron converter in the study of solid-body surface by the positron methods %J Doklady Akademii Nauk %D 1989 %P 590-595 %V 304 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1989_304_3_a18/ %G ru %F DAN_1989_304_3_a18