@article{PismaZhETF.49.655,
    title = {Self-induced periodic structures in anisotropic crystals},
    author = {Martynovich, E. F.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {49},
    issue = {12},
    pages = {655},
    year = {1989},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17013.shtml},
}