@article{PismaZhETF.87.647,
    title = {High temperature superconductivity in transition metal oxypnictides: a rare-earth puzzle?},
    author = {Nekrasov, I. A. and Pchelkina, Z. V. and Sadovskii, M. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {87},
    issue = {10},
    pages = {647},
    year = {2008},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_28082.shtml},
}