Competitive interactions for food resources between invasive racer goby Babka gymnotrachelus and native European bullhead Cottus gobio. - Kakareko, Tomasz; Kobak, Jarosław; Grabowska, Joanna; Jermacz, Łukasz; Przybylski, Mirosław; Poznańska, Małgorzata; Pietraszewski, Dariusz; Copp, Gordon (Biological Invasions, 2013)