@article{PismaZhETF.65.380,
    title = {Non envelope formulation for femtosecond optical pulses in semiconductors},
    author = {Mel'nikov, I. V. and Mihalache, D. and Moldoveanu, F. and Panoiu, N. -C.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {65},
    issue = {5},
    pages = {380},
    year = {1997},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_15108.shtml},
}