@article{PismaZhETF.62.739,
    title = {Spectral dependence of relaxation in $YBa_2Cu_3O_{7-\delta}$ with femtosecond laser excitation},
    author = {Vengrus, I. I. and Dobryakov, A. L. and Kovalenko, S. A. and Letokhov, V. S. and Lozovik, Yu. E. and MarovskiT Matveets, Yu. A. G. and Farztdinov, V. M. and Ernsting, N. R.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {62},
    issue = {9},
    pages = {739},
    year = {1995},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_18451.shtml},
}