Zakar, E., Zajácz, E., Rácz, T., Oláh, J., Jávor, A., & Kusza, S. (2013). Morpometric study of Hungarian honey bee (Apis mellifera L.) colonies. Acta Agraria Debreceniensis, 51, 59-63. https://doi.org/10.34101/actaagrar/51/2063