@article{PismaZhETF.17.519,
    title = {Pole Singularity of Triangular Diagram},
    author = {Gorshkov, V. G. and Sherman, S. G.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {17},
    issue = {9},
    pages = {519},
    year = {1973},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23611.shtml},
}