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@article{DE_1970_6_1_a1, author = {V. A. Il'in}, title = {A lower bound of the sum of the squares of the fundamental functions, and of the number of the fundamental values, for an arbitrary $FSF$ of {Laplace's} operator}, journal = {Differencialʹnye uravneni\^a}, pages = {7--16}, publisher = {mathdoc}, volume = {6}, number = {1}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1970_6_1_a1/} }
TY - JOUR AU - V. A. Il'in TI - A lower bound of the sum of the squares of the fundamental functions, and of the number of the fundamental values, for an arbitrary $FSF$ of Laplace's operator JO - Differencialʹnye uravneniâ PY - 1970 SP - 7 EP - 16 VL - 6 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1970_6_1_a1/ LA - ru ID - DE_1970_6_1_a1 ER -
%0 Journal Article %A V. A. Il'in %T A lower bound of the sum of the squares of the fundamental functions, and of the number of the fundamental values, for an arbitrary $FSF$ of Laplace's operator %J Differencialʹnye uravneniâ %D 1970 %P 7-16 %V 6 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1970_6_1_a1/ %G ru %F DE_1970_6_1_a1
V. A. Il'in. A lower bound of the sum of the squares of the fundamental functions, and of the number of the fundamental values, for an arbitrary $FSF$ of Laplace's operator. Differencialʹnye uravneniâ, Tome 6 (1970) no. 1, pp. 7-16. http://geodesic.mathdoc.fr/item/DE_1970_6_1_a1/