%0 Journal Article %A K. R. Allahverdyan %T Experimental investigation of quenching of defects by external electrical field and its influences on photonic band gap in cholesteric liquid crystals %J Proceedings of the Yerevan State University. Physical and mathematical sciences %D 2012 %P 55-61 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/UZERU_2012_2_a8/ %G en %F UZERU_2012_2_a8