M. Takács and J. Oláh, “The effect of the queen bee’s age on the spring development and honey production of honey bee colonies (Apis mellifera l.)”, ANIM WELFARE ETOL TARTÁSTECHN, vol. 16, no. 1, pp. 70–78, May 2020, doi: 10.17205/SZIE.AWETH.2020.1.070.