P. PetruÅ¡ka*, E. TuÅ¡imová, A. Kalafová, P. Haščík, A. Kolesárová, and M. Capcarová, “EFFECT OF PROPOLIS IN CHICKEN DIET ON SELECTED PARAMETERS OF MINERAL PROFILE”, J microb biotech food sci, vol. 1, no. 4, pp. 593–600, Feb. 2012.