@article{PismaZhETF.52.837,
    title = {Multivalued action functionals, Lorentz harmonics, and spin},
    author = {Bandos, I. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {52},
    issue = {4},
    pages = {837},
    year = {1990},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17473.shtml},
}