Martowicz, M., and M. Kosiba. “Physico-Chemical Analysis of Flowers and Sloes of Blackthorn – the Shrub from Which the Name of the Town of Tarnow Originates”. Science, Technology and Innovation, vol. 4, no. 3, Oct. 2017, pp. 111-23, doi:10.5604/01.3001.0010.8022.