@article{PismaZhETF.2.14,
    title = {Violation of CP Invariance in λ$^0$ -meson Decays and the Non-invariant Vacuum},
    author = {Grib, A. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {2},
    issue = {1},
    pages = {14},
    year = {1965},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24445.shtml},
}