@article{PismaZhETF.14.23,
    title = {Nonlinear Conversion of IR Radiation into Visible Light as a New Method of Absorption Spectral Analysis},
    author = {Antonov, E. N. and Bel'shov, M. A. and Koloshnikov, V. G. and Nikogosyan, D. N.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {14},
    issue = {1},
    pages = {23},
    year = {1971},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24533.shtml},
}