@article{PismaZhETF.89.133,
    title = {Scalar and vector Keldysh models in the time domain},
    author = {Kiselev, M. N. and Kikoin, K. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {89},
    issue = {3},
    pages = {133},
    year = {2009},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_28420.shtml},
}