@article{PismaZhETF.16.50,
    title = {Level Spectrum of Three Resonantly Interacting Particles},
    author = {Efimov, V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {16},
    issue = {1},
    pages = {50},
    year = {1972},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26726.shtml},
}