1. Buisman, Chr. J., 1932. Ceratostomella ulmi, de geslachtelijke vorm van Graphium ulmi Schwarz. Tijdschr. PlZiekt. 38: 1–5 (Phytopath. Transl. 5: 1–8 Photocopy in English translation available from F. W. Holmes, Shade Tree Laboratories, University of Massachusetts, Amherst, Mass., 01002, U.S.A., at current cost.).
2. Holmes, F. W., 1958. Distribution of sexual-compatibility strains of Ceratocystis ulmi (Buisman) Moreau in Massachusetts. Phytopathology 48 (5): 263.
3. Holmes, F. W., 1965. Virulence in Ceratocystis ulmi. Neth. J. Pl. Path. 71: 97–112.
4. Holmes, F. W. & Demaradzki, J. S., 1957. Distribution of compatibility types of Ceratocystis ulmi (Buisman) Moreau. Rep. Mass. Agric. Exp. Stn 1956–57, Bull. (503): 52.
5. Holmes, F. W. & Demaradzki, J. S., 1959. Distribution in Massachusetts of sexual-compatibility strains of Ceratocystis ulmi (Buisman) Moreau. Rep. Mass. Agric. Exp. Stn 1958–59, Bull. (518): 34.