@article{PismaZhETF.91.339,
    title = {Analytical approximation for single-impurity Anderson model},
    author = {Krivenko, I. S. and Rubtsov, A. N. and Katsnelson, M. I. and Lichtenstein, A. I.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {91},
    issue = {6},
    pages = {339},
    year = {2010},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_28782.shtml},
}