@misc{an+improvement+of+the+ant+algorithm+for+the+maximum+clique+problem,
    author = {Schiff, Krzysztof},
    title = {An improvement of the ant algorithm for the maximum clique problem},
    journal = {Technical Transactions},
    address = {Kraków},
    publisher = {<a href=\"http://www.wydawnictwo.pk.edu.pl/\" target=\"_blank\">Wydawnictwo PK</a>},
    date = {2015},
    number = {Y. 112, iss. 2-E}
}