@article{PismaZhETF.53.548,
    title = {Symmetry of the EL 2 center in GaAs},
    author = {Bagraev, N. T.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {53},
    issue = {11},
    pages = {548},
    year = {1991},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17649.shtml},
}