%0 Journal Article %A Vikt. I. Spitsyn %A V. V. Gromov %A L. G. Karaseva %T Electron spin resonance spectra of radioactive and irradiated samples of calcium, strontium and barium sulphates %J Doklady Akademii Nauk %D 1964 %P 178-181 %V 159 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1964_159_1_a33/ %G ru %F DAN_1964_159_1_a33