@article{PismaZhETF.7.391,
    title = {Lower Bound of Elastic Scattering at a Fixed Momentum Transfer},
    author = {Nguyen Van Hieu, },
    journal = {Письма в ЖЭТФ},
    volume = {7},
    issue = {10},
    pages = {391},
    year = {1968},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_25797.shtml},
}