Spencer, Roger, ed., Horticultural Flora of South-Eastern Australia, Vol. 2 (Sydney, 1995), Ulmus, p. 103-118 [2]
Simon Morelot, Cours élémentaire d'histoire naturelle pharmaceutique..., 1800, p. 349 "the elm, pompously named pyramidal...it had an ephemeral reputation"
Gaston de Lévis, Souvenirs et portraits, 1780-1789, 1813, p. 240
Heybroek, H.M. (1993). "The Dutch Elm Breeding Program". In Sticklen, Mariam B.; Sherald, James L. (eds.). Dutch Elm Disease Research. New York, USA: Springer-Verlag. pp. 16–25. ISBN978-1-4615-6874-2. Retrieved 26 October 2017.
Went, Johanna C. (1954). "The Dutch elm disease - Summary of fifteen years hybridisation and selection work (1937–1952)". European Journal of Plant Pathology. 60 (2): 109–127. Bibcode:1954EJPP...60..109W. doi:10.1007/BF02151105. S2CID38868071.
Went, Johanna C. (1954). "The Dutch elm disease - Summary of fifteen years hybridisation and selection work (1937–1952)". European Journal of Plant Pathology. 60 (2): 109–127. Bibcode:1954EJPP...60..109W. doi:10.1007/BF02151105. S2CID38868071.
Mittempergher, L; Santini, A (2004). "The history of elm breeding"(PDF). Investigacion Agraria: Sistemas y Recursos Forestales. 13 (1): 161–177. Archived from the original(PDF) on 11 February 2017.
Went, Johanna C. (1954). "The Dutch elm disease - Summary of fifteen years hybridisation and selection work (1937–1952)". European Journal of Plant Pathology. 60 (2): 109–127. Bibcode:1954EJPP...60..109W. doi:10.1007/BF02151105. S2CID38868071.
Mittempergher, L; Santini, A (2004). "The history of elm breeding"(PDF). Investigacion Agraria: Sistemas y Recursos Forestales. 13 (1): 161–177. Archived from the original(PDF) on 11 February 2017.