Sachtleben, H. (1956). Entomologische Chronik (Prof. Heinrich von Oettingen, Prof. Charles Thomas Brues, Dr. Robert Cyril Layton Perkins, Carl Henseler, André Martin Jean Joseph Janssens). Beiträge Zur Entomologie = Contributions to Entomology, 6(3-4), 455–460. https://doi.org/10.21248/contrib.entomol.6.3-4.455-460