@article{PismaZhETF.6.509,
    title = {Nonlinear Defocusing of Laser Beams},
    author = {Akhmanov, S. A. and Krindach, D. P. and Sukhorkukov, A. P. and Khokhlov, R. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {6},
    issue = {2},
    pages = {509},
    year = {1967},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_25250.shtml},
}