%0 Journal Article %A N. V. Zepelev %T On the Reflection Coefficients from the ``Weak'' Boundaries between Media %J Zapiski Nauchnykh Seminarov POMI %D 1974 %P 250-254 %V 42 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1974_42_a16/ %G ru %F ZNSL_1974_42_a16