@article{PismaZhETF.50.75,
    title = {Two-electron transitions involving a biexciton},
    author = {Belyi, N. M. and Gorban', I. S. and Gubanov, V. A. and Dmitruk, I. N.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {50},
    issue = {2},
    pages = {75},
    year = {1989},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17047.shtml},
}