Heybroek, H. M., Goudzwaard, L, Kaljee, H. (2009). Iep of olm, karakterboom van de Lage Landen (:Elm, a tree with character of the Low Countries). KNNV, Uitgeverij. ISBN9789050112819. Photograph of Japanese elm in the Netherlands [2]
fombl.org.uk
Tree labelled Japanese elm by 'Friends of the Meadows and Bruntsfield Links', in Coronation Walk, The Meadows, Edinburgh: fombl.org.uk [3][4]
forestry.gov.uk
Heybroek, Hans M. (1983). Burdekin, D.A. (ed.). "Resistant elms for Europe"(PDF). Forestry Commission Bulletin (Research on Dutch Elm Disease in Europe) (60). London: HMSO: 108–113.
harvard.edu
flora.huh.harvard.edu
Fu, L., Xin, Y. & Whittemore, A. (2002). Ulmaceae, in Wu, Z. & Raven, P. (eds) Flora of China, Vol. 5 (Ulmaceae through Basellaceae). Science Press, Beijing, and Missouri Botanical Garden Press, St. Louis, USA [1]
"Ulmus wilsoniana var. wilsoniana". Herbarium catalogue. Royal Botanic Gardens, Kew. Retrieved 17 October 2016. From Chanyang, W. China (Wilson specimen, 1909); "Ulmus wilsoniana var. psilophylla". Herbarium catalogue. Royal Botanic Gardens, Kew. Retrieved 17 October 2016. From Hupeh, C. China (Wilson specimen, 1907); "Ulmus wilsoniana var. subhirsuta". Herbarium catalogue. Royal Botanic Gardens, Kew. Retrieved 17 October 2016. From Szechuan, C. China (Schneider specimen, 1914)
Burdekin, D.A.; Rushforth, K.D. (November 1996). "Elms resistant to Dutch elm disease"(PDF). Arboriculture Research Note. 2/96. Revised by J.F. Webber. Alice Holt Lodge, Farnham: Arboricultural Advisory & Information Service: 1–9. ISSN1362-5128. Retrieved 26 October 2017.
F. K., Makins (1967). The Identification of Trees & Shrubs. Dent. OCLC500545778.
Burdekin, D.A.; Rushforth, K.D. (November 1996). "Elms resistant to Dutch elm disease"(PDF). Arboriculture Research Note. 2/96. Revised by J.F. Webber. Alice Holt Lodge, Farnham: Arboricultural Advisory & Information Service: 1–9. ISSN1362-5128. Retrieved 26 October 2017.
