%0 Journal Article %A A. A. Gevorgyan %A O. S. Eritsyan %A Zh. O. Ninoyan %T The investigation of the near-boundary effect and the variations of the director direction on the passage of the light through the three-layer sheet involving the liquid-crystal layer %J Proceedings of the Yerevan State University. Physical and mathematical sciences %D 1990 %P 62-66 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/UZERU_1990_1_a9/ %G ru %F UZERU_1990_1_a9