%0 Journal Article %A Radev, Slavian %T Test, Teachers, Quorum (Pure Populations) %J Serdica Journal of Computing %D 2013 %P 215-226 %V 7 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/SJC_2013_7_3_a1/ %G en %F SJC_2013_7_3_a1