Kitowski I., Wiącek D., Sujak A., Komosa A., Świetlicki M.:  Factors affecting trace element accumulation in livers of avian species from East Poland (2017 r.) Turkish Journal of Zoology 2017, Vol. 41, 901-913

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Kitowski I., Sujak A., Wiącek D., Strobel W., Komosa A., Stobiński M.:  Heavy metals in livers of raptors from Eastern Poland - the importance of diet composition (2016 r.) Belgian Journal of Zoology 2016, Vol. 146, 1, 3-13