@article{PismaZhETF.17.25,
    title = {Quantum Diffusion of $He^3$ Impurities in Solid $H^4$},
    author = {Grigor'ev, V. N. and Esel'son, B. N. and Mikheev, V. A. and Shul'man, Yu. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {17},
    issue = {1},
    pages = {25},
    year = {1973},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23421.shtml},
}