@article{PismaZhETF.15.215,
    title = {High-energy Asymptotic Form of Scattering Amplitudes and Vertex Functions},
    author = {Khalfin, L. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {15},
    issue = {4},
    pages = {215},
    year = {1972},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26532.shtml},
}