%0 Journal Article %A Ya. E. Geguzin %A I. V. Vorob'eva %T Surface tracks ($S$-tracks) from an external source of fissioning nuclei on muscovite, lithium fluoriie, and gypsum crystals %J Doklady Akademii Nauk %D 1973 %P 584-586 %V 208 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_208_3_a23/ %G ru %F DAN_1973_208_3_a23