@article{PismaZhETF.15.427,
    title = {$\rho^0 - \omega$ Interference in the Reactions $\gamma N\to \pi^+\pi^-\Delta$},
    author = {Achasov, N. N. and Shestakov, G. N.},
    journal = {Письма в ЖЭТФ},
    volume = {15},
    issue = {7},
    pages = {427},
    year = {1972},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26612.shtml},
}