@manual{zu213212,
          number = {83-01-11005-8},
          author = {?ndrzej P?echoc?? and ?nna Dyduch-Faln?ows?a},
         address = {Warszawa},
           title = {Mi{\k e}czaki ma{\l}{\.z}e},
            type = {???????????},
       publisher = {Naukowe PWN},
    organization = {Polskie Towarzystwo Hydrobiologiczne},
            year = {1993},
             url = {http://eprints.zu.edu.ua/13212/}
}