@article{PismaZhETF.54.351,
    title = {Hole quantum Hall effect in stressed $Ge-Ge_{1-x}Si_x$ superlattices},
    author = {Kuznetsov, O. A. and Chernov, A. L. and Orlov, L. K. and Rubtsova, R. A. and Arapov, Yu. G. and Gorodilov, N. A. and Shtrapenin, G. L.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {54},
    issue = {6},
    pages = {351},
    year = {1991},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_18899.shtml},
}