@article{PismaZhETF.9.299,
    title = {Concerning the Gravitational Moment of the Proton},
    author = {Vasil'ev, B. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {9},
    issue = {5},
    pages = {299},
    year = {1969},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_25348.shtml},
}