@article{PismaZhETF.24.363,
    title = {Dispersion of quadratic optical susceptibility of lithium niobate and barium sodium niobate crystals},
    author = {Dorozhkin, L. M. and Kizel', V. A. and Shigorin, V. D. and Shipulo, G. N.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {24},
    issue = {6},
    pages = {363},
    year = {1976},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_27719.shtml},
}