@article{PismaZhETF.11.38,
    title = {Formation of Positronium in 1S and 2S States in Oxides},
    author = {Gol'danskii, V. I. and Levin, B. M. and Mokrushin, A. D.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {11},
    issue = {1},
    pages = {38},
    year = {1970},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26050.shtml},
}