@article{PismaZhETF.2.387,
    title = {Search for $\pi^0 \to 3\gamma$ Decay},
    author = {Kut'in, V. M. and Petrukhin, V. I. and Prokoshkin, Yu. D.},
    journal = {Письма в ЖЭТФ},
    volume = {2},
    issue = {8},
    pages = {387},
    year = {1965},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24623.shtml},
}