1. Thompson D, Harrington F, Douglas G, Hennerty M, Nakhshab N, Long R (2001) Vegetative propagation techniques for oak, ash, sycamore and spruce. COFORD Publ, Dublin
2. Cornu D, Garbaye J, Laplace Y, Le Tacon F, Picard JF (1977) Le bouturage de feuillus divers. Revue Forestière Française 29(4):278–284
3. Dirr MA, Heuser CW Jr (1987) The reference manual of woody plant propagation. Varsity press, Athens
4. Hammatt N, Ridout MS (1992) Micropropagation of common ash (Fraxinus excelsior L.). Plant Cell Tissue Organ Cult 31:67–74
5. Trees V;RLM Pierik,1997