@article{PismaZhETF.54.553,
    title = {Theory of the radial-orbit instability as a universal cause of structure formation in stellar systems},
    author = {Polyachenko, V. L.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {54},
    issue = {10},
    pages = {553},
    year = {1991},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_19150.shtml},
}