Soares, A.O., Haelewaters, D., Ameixa, O.M.C.C., Borges, I., Brown, P.M.J., Cardoso, P., de Groot, M.D., Evans, E.W., Grez, A.A., Hochkirch, A., Holecová, M., Honek, A., Kulfan, J., Lillebø, A.I., Martinkova, Z., Michaud, J.P., Nedved, O., Roy, H.E., Saxena, S., Shandilya, A., Sentis, A., Skuhrovec, J., Viglášová, S., Zach, P., Zaviezo, T. & Losey, J.E. (2022) A roadmap for ladybird conservation and recovery. Conservation Biology.
Werenkraut, V., Baudino, F. & Roy, H.E. (2020) Citizen science reveals the distribution of the invasive harlequin ladybird (Harmonia axyridis Pallas) in Argentina. Biological Invasions, 22, 2915-2921.
Brown, P.M.J., Roy, H.E., Rothery, P., Roy, D.B., Ware, R.L., Majerus, M.E.N., Roy, H.E. & Wajnberg, E. (2008) Harmonia axyridis in Great Britain: analysis of the spread and distribution of a non-native coccinellid. From Biological Control to Invasion: the Ladybird Harmonia axyridis as a Model Species pp. 55-67. Springer Netherlands.