Hudz, N.; Korzeniowska, K.; Wieczorek, P. P.; Schubertová, Z.; Brindza, J.; Ivanišová, E. Approaches to the Identification and Assay of Flavonoids in Bee Bread Extracts by Spectrophotometric Method. – 1 –Agrobiodivers Improv Nutr Health Life Qua 2017.