@article{PismaZhETF.89.270,
    title = {Novel approach to a perfect lens},
    author = {Klimov, V. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {89},
    issue = {5},
    pages = {270},
    year = {2009},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_28444.shtml},
}