@article{PismaZhETF.52.826,
    title = {Direct experimental proof of the existence of delocalized states below the Fermi level under conditions corresponding to the integer quantum Hall effect},
    author = {Dolgopolov, V. T. and Zhitenev, N. B. and Shashkin, A. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {52},
    issue = {3},
    pages = {826},
    year = {1990},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17471.shtml},
}