Stolarczyk, M. (2014). 
	Diversity of different fractions of phosphorus in grassland soils of agricultural lands in the vicinity of a fertilizer stockpile in Tarnawa Wyżna (Western Bieszczady Mts). Geographical Studies, 2014, 57-72. doi: https://doi.org/10.4467/20833113PG.13.023.1551