Bieńkowski, A. O., and M. J. Orlova-Bienkowskaja. “Establishment of the New Alien Pest Woolly Ash Aphid Prociphilus (Meliarhizophagus) Fraxinifolii (Riley, 1979) in European Russia”. Baltic Forestry, vol. 24, no. 2, Dec. 2018, pp. 185-8, https://balticforestryojs.lammc.lt/ojs/index.php/BF/article/view/261.