M.  Kosunen, Kantola, T., Starr, M., Blomqvist, M., Talvitie, M., and Lyytikäinen-Saarenmaa, P., ?Influence of soil and topography on defoliation intensity during an extended outbreak of the common pine sawfly (Diprion pini L.).?, iForest-Biogeosciences and Forestry, vol. 10, pp. 164-171, 2017.