@article{PismaZhETF.25.120,
    title = {Dynamics of spherically symmetrical pulsons of large amplitude},
    author = {Bogolyubskii, I. L. and Makhan'kov, V. G.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {25},
    issue = {2},
    pages = {120},
    year = {1977},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_21071.shtml},
}