@article{PismaZhETF.21.199,
    title = {Negative-affinity emitter based on a semiconducting ferroelectric},
    author = {Zhdan, A. G. and Sandomirskii, V. B. and Chenskii, E. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {21},
    issue = {3},
    pages = {199},
    year = {1975},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22285.shtml},
}