%0 Journal Article
%A K. Yu. Kishkis
%T Letter to the editors: ``The index of the Bitsadze--Samarski{\v\i} problem for harmonic functions'' [Differentsial'nye Uravneniya \textbf{24} (1988), no.~1, 105--110; MR0930160]
%J Differencialʹnye uravneniâ
%D 1989
%P 546
%V 25
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1989_25_3_a28/
%G ru
%F DE_1989_25_3_a28