@article{PismaZhETF.45.168,
    title = {Partition functions for open and/or oriented strings},
    author = {Morozov, A. and Roslyi, A.},
    journal = {Письма в ЖЭТФ},
    volume = {45},
    issue = {4},
    pages = {168},
    year = {1987},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_18710.shtml},
}