%0 Journal Article %A R. I. Mints %A I. I. Mil'man %A V. I. Kryuk %A L. S. Tarasov %T Natural exoelectronic emission of anorthosite rocks brought by the ``Luna-20'' probe %J Doklady Akademii Nauk %D 1973 %P 586-588 %V 209 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_209_3_a18/ %G ru %F DAN_1973_209_3_a18