@article{PismaZhETF.59.247,
    title = {Quantum Hall effect in multilayer p-Ge/$Ge_{1-x}Si_x$  heterostructuresand energy spectrum of the 2D hole gas in a magnetic field},
    author = {Arapov, Yu. G. and Gorodilov, N. A. and Neverov, V. N. and Yakunin, M. V. and Germanenko, A. V. and Min'kov, G. M. and Kuznetsov, O. A. and Rubtsova, R. A. and Chernov, A. L. and Orlov, L. K.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {59},
    issue = {4},
    pages = {247},
    year = {1994},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_19608.shtml},
}