%0 Journal Article %A A. V. Zarelua %T On the Darem Research Symposium on applications of the pencil theory to logic, algebra, and analysis %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1978 %V 33 %N 2 %U http://geodesic.mathdoc.fr/item/RM_1978_33_2_a28/ %G ru %F RM_1978_33_2_a28