Rushton, Brian S., and Anne E. Toner. 1988. “A Comparative Study of Wind Damage to the Leaves of Ash (Fraxinus Excelsior L.) and Sycamore (Acer Pseudoplantanus L.).”. Irish Forestry, November. https://journal.societyofirishforesters.ie/index.php/forestry/article/view/9627.