@article{PismaZhETF.60.42,
    title = {Nonlinear structures and their collective excitations in a coherent state of excitons during resonant pumping},
    author = {Balkarey, Yu. I. and Cohen, A. S. and Posvyanskii, V. S.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {60},
    issue = {1},
    pages = {42},
    year = {1994},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_19962.shtml},
}