@misc{assignment+problem+and+its+extensions+for+construction+project+scheduling,
    author = {Jaśkowski, Piotr i Tomczak, Michał},
    title = {Assignment problem and its extensions for construction project scheduling},
    journal = {Technical Transactions},
    address = {Kraków},
    publisher = {<a href=\"http://www.wydawnictwo.pk.edu.pl/\" target=\"_blank\">Wydawnictwo PK</a>},
    date = {2014},
    number = {Y. 111, iss. 2-B}
}