Pons, X., M. Roca, B. Lumbierres, and Éric Lucas. “Characterization of a Newly Established Aggregation of the Invasive Ladybeetle Harmonia Axyridis and Current Status of the Invader in Spain”. Spanish Journal of Agricultural Research, Vol. 13, no. 2, May 2015, p. e1006, doi:10.5424/sjar/2015132-7054.