%0 Journal Article
%A V. V. Vishnevskii
%T On the bicentenary of N.~I.~Lobachevskii. Lessons and results
%J Trudy Geometricheskogo Seminara
%D 1997
%P 23-32
%V 23
%I mathdoc
%U http://geodesic.mathdoc.fr/item/KUTGS_1997_23_a2/
%G ru
%F KUTGS_1997_23_a2