1. Guyton, T. L., Greenhouse fumigation. Pennsylvania Dept. Agric. Gen. Bul. 413, Okt. 1925 (ref. Review of applied Entomology XIV, 1926).
2. Miles, H. W., Glasshouse fumigation with calcium cyanide. Fruit, Flower & Veg. Trades Journal, London July 1926 (ref. R. a. E. XIV, 1926).
3. Sasscer. E. R., and Weigel, C. A., Recent development in greenhouse fumigation with hydrocyanic-acid gas. Journ. Econ. Ent. XVII, 1924, S. 214–222.
4. Deckert, H., Die Anwendung der Blausäure bei der Schädlingsbekämpfung in Gewächshäusern. Die Gartenwelt XXX, 1926, Nr. 37, 39, 44 und 45.
5. Guba, E. F., Injury to glasshouse plants from hydrocyanic-acid gas, following the application of copper fungicides. Phytopathology XVI, 1926, S. 633–634.