%0 Journal Article %A È. I. Adirovich %T Distribution of heterocharge and field in photoelectrets %J Doklady Akademii Nauk %D 1961 %P 1335-1338 %V 137 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_137_6_a20/ %G ru %F DAN_1961_137_6_a20