@article{PismaZhETF.14.220,
    title = {Use of Liquid Crystals  Make Infrared Radiation Visible},
    author = {Tolmachev, A. V. and Kuz'michev, V. M.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {14},
    issue = {4},
    pages = {220},
    year = {1971},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24592.shtml},
}