Turóci Ágnes, FehérZ., KrízsikV. and Páll-GergelyB. (2020) “Two new alien slugs, Krynickillus melanocephalus Kaleniczenko, 1851 and Tandonia kusceri (H. Wagner, 1931), are already widespread in Hungary”, Acta Zoologica Academiae Scientiarum Hungaricae, 66(3), pp. 265–282. doi: 10.17109/AZH.66.3.265.2020.