@article{PismaZhETF.70.321,
    title = {Astrophysical limit on the coupling constant of hypothetical leptonic photons to leptons},
    author = {Martemyanov, B. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {70},
    issue = {5},
    pages = {321},
    year = {1999},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_14011.shtml},
}