@article{PismaZhETF.18.654,
    title = {Effects of branch cuts on the correlations between charged and neutral pions},
    author = {Levin, E. M. and Ryskin, M. G.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {18},
    issue = {10},
    pages = {654},
    year = {1973},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24056.shtml},
}