"New and rare plants". The Gardener's Monthly and Horticultural Advertiser. 16: 123. 1874.
handle.net
hdl.handle.net
Pourtet, J.; Rol, R. (1949). "Catalogue des espèces cultivées dans l'arboretum des barres". Annales de l'école nationale des eaux et forêts et de la station de recherches et expériences (2): 316–319. hdl:2042/33539.
Bice, Maija; Knape, Dzintra; Šmite, Dagnija; Bondare, Ināra (2003). "Liepājas rajona koki un krūmi" [Trees and shrubs of the Liepāja region] (PDF). Latvijas Veģetācija. 6. Riga: University of Latvia publishing house: 12, 55. ISSN1407-3641. Retrieved 23 March 2018.
wikimedia.org
commons.wikimedia.org
Katalog(PDF). Vol. 108. Berlin, Germany: L. Späth Baumschulenweg. 1902–1903. pp. 132–133.
Accessions book. Royal Botanic Garden Edinburgh. 1902. pp. 45, 47.
worldcat.org
search.worldcat.org
Bice, Maija; Knape, Dzintra; Šmite, Dagnija; Bondare, Ināra (2003). "Liepājas rajona koki un krūmi" [Trees and shrubs of the Liepāja region] (PDF). Latvijas Veģetācija. 6. Riga: University of Latvia publishing house: 12, 55. ISSN1407-3641. Retrieved 23 March 2018.