@article{PismaZhETF.61.609,
    title = {Slow relaxation of an excited state of an arsenic donor impurity in germanium},
    author = {Pokrovskii, Ya. E. and Smirnova, O. I. and Khval'kovskii, N. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {61},
    issue = {7},
    pages = {609},
    year = {1995},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_18239.shtml},
}