@article{PismaZhETF.20.488,
    title = {Spontaneous vacuum transitions in dual models},
    author = {Volkov, D. V. and Zheltukhin, A. A. and Pashnev, A. I.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {20},
    issue = {7},
    pages = {488},
    year = {1974},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_27321.shtml},
}