@misc{on+the+pumping+efficiency+in+agitated+vessel+equipped+with+different+dual+impellers,
    author = {Duda, Andrzej i Kamieński, Jerzy i Talaga, Jan},
    title = {On the pumping efficiency in agitated vessel equipped with different dual impellers},
    journal = {Czasopismo Techniczne. Mechanika},
    address = {Kraków},
    publisher = {<a href=\"http://www.wydawnictwo.pk.edu.pl/\" target=\"_blank\">Wydawnictwo PK</a>},
    date = {2008},
    number = {R. 105, Z. 6, 5-M}
}