1. Al-Asheh S, Duvnjak Z (1997) Sorption of cadmium and other heavy metals by pine bark. J Hazard Mater 56(1–2):35–51
2. Bąbelewska A (2013) The impact of sulphur dioxide from Częstochowa Agglomeration on acidity degree of Pinus sylvestris L. bark of „Zielona Góra” and „Sokole Góry” Nature Reserves (Wyżyna Krakowsko-Częstochowska). Natural Environment Monitoring 14:69–77
3. Baslar S, Dogan Y, Durkan N, Bag H (2009) Biomonitoring of zinc and manganese in bark of Turkish red pine of western Anatolia. J Environ Biol 30(5):831–834
4. Chrzan A, Marko-Worłowska M (2012) Content of heavy metals in soil and in pine bark in Skalki Twardowskiego Landscape Park in Krakow. Ecol Chem Eng A 19(10):1255–1262
5. Cieśla W, Dąbkowska-Naskręt H, Borowska K, Malczyk P, Długosz J, Jaworska H, Kędzia W, Zalewski W (1994) Trace elements in soils of selected areas Pomorza and Kujaw. Zesz Probl Postep Nauk Rol 414:63–70 (in Polish)