Branco, M., Franco, J. C., Carvalho, C. J., & Mendel, Z. (2001). Occurrence of Hemerobius stigma Stephens in pine bast scale (Matsucoccus spp.) populations: opportunistic predation or obligatory association?. Bollettino Di Zoologia Agraria E Bachicoltura, 33(3), 397–407. Recuperato da https://riviste.unimi.it/index.php/bzab/article/view/27583