Higes, M., F. Esperón, and J.M. Sánchez-Vizcaíno. 2007. “Short Communication. First Report of Black Queen-Cell Virus Detection in Honey Bees (Apis Mellifera) in Spain”. Spanish Journal of Agricultural Research 5 (3), 322-25. https://doi.org/10.5424/sjar/2007053-263.