@article{PismaZhETF.34.165,
    title = {Theory of multipulse spin-locking in nuclear quadrupole resonance},
    author = {Provotorov, B. N. and Khitrin, A. K.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {34},
    issue = {4},
    pages = {165},
    year = {1981},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23156.shtml},
}