@article{PismaZhETF.73.134,
    title = {Multiple two-photon resonance-enhanced ionization of elements in natural conditions: Nebulae in the vicinity of hot stars},
    author = {Johansson, S. and Letokhov, V. S.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {73},
    issue = {3},
    pages = {134},
    year = {2001},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_9675.shtml},
}