Somlyay, Lajos, and Alexander N. Sennikov. 2016. “Atlas Florae Europaeae Notes 30. Resurrection and Typification of the Name Sorbus semipinnata Borbás (Rosaceae)”. Phytotaxa 266 (1). Auckland, New Zealand:45–47. https://doi.org/10.11646/phytotaxa.266.1.7.