@article{AIHPA_1968__9_4_357_0,
     author = {Nguyen Van Hieu and Nguyen Ngoc Thuan and Suleymanov, V. A.},
     title = {On the shrinkage of the forward and backward diffraction peaks},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {357--369},
     publisher = {Gauthier-Villars},
     volume = {9},
     number = {4},
     year = {1968},
     mrnumber = {604642},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1968__9_4_357_0/}
}