@article{PismaZhETF.43.339,
    title = {New nonlinear high-frequency effects and S-shaped negative differential conductivity in multilayer heterostructures},
    author = {Belyantsev, A. M. and Ignatov, A. A. and Piskarev, V. I. and Sinitsyn, M. A. and Shashkin, V. I. and Yavich, B. S. and Yakovlev, M. L.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {43},
    issue = {7},
    pages = {339},
    year = {1986},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_21342.shtml},
}