%0 Journal Article %A A. M. Kalinina %A E. A. Porai-Koshits %T On the existence of metakaolinite and the nature of the exothermal effects of alumina %J Doklady Akademii Nauk %D 1957 %P 365-368 %V 114 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1957_114_2_a29/ %G ru %F DAN_1957_114_2_a29