W. Koch, W. Kukuła-Koch, Z. Marzec, and M. Jurek, “Influence of extraction conditions on the recovery of the sum of phenolic compounds from daily food rations of students”, Curr. Issues Pharm. Med. Sci., vol. 25, no. 3, pp. 240–242, Jul. 2012, doi: 10.12923/j.2084-980X/25.3/a.03.