@misc{some+remarks+on+hausdorff+gaps+and+automorphisms+of+p+o+fin,
    author = {Grzech, Magdalena},
    title = {Some remarks on Hausdorff gaps and automorphisms of P(ω)/fin},
    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. 3-NP}
}