@article{PismaZhETF.27.345,
    title = {Inhomogeneous state of a system of parametrically excited nuclear spin},
    author = {Govorkov, S. A. and Tulin, V. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {27},
    issue = {6},
    pages = {345},
    year = {1978},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23712.shtml},
}