%0 Journal Article %A Nguyen Van Hieu %A Nguyen Ngoc Thuan %A Suleymanov, V. A. %T On the shrinkage of the forward and backward diffraction peaks %J Annales de l'institut Henri Poincaré. Section A, Physique Théorique %D 1968 %P 357-369 %V 9 %N 4 %I Gauthier-Villars %U http://www.numdam.org/item/AIHPA_1968__9_4_357_0/ %G en %F AIHPA_1968__9_4_357_0