%0 Journal Article %A Yu. P. Bulashevich %A R. L. Kharus %T A hypothesis of the protoplanet material neutron irradiation and chang in isotopic composition of some elements %J Doklady Akademii Nauk %D 1981 %P 53-55 %V 261 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1981_261_1_a12/ %G ru %F DAN_1981_261_1_a12