%0 Journal Article %A V. V. Tolmachev %T Logarithmic criterion for superconductivity %J Doklady Akademii Nauk %D 1961 %P 563-566 %V 140 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_140_3_a13/ %G ru %F DAN_1961_140_3_a13