Citations: Gilbert, P. 2007: A Source Book for Biographical Literature on Entomologists Leiden, Backhuys Publishers, 694 S., A 2972, pp. 62
Howard, L. O. 1930: History of applied Entomology (Somewhat Anecdotal). Smithsonian Miscellaneous Collections, Washington 84, S. X+1-564, B15: 1018, pp. Taf. 50