%0 Journal Article
%A Tsvetkova, Katya
%A Tsvetkov, Milcho
%A Kounchev, Ognyan
%T Photographic Plate Libraries at European Astronomical Observatories
%J Serdica Journal of Computing
%D 2012
%P 19-34
%V 6
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SJC_2012_6_1_a1/
%G en
%F SJC_2012_6_1_a1