Chelsea Cunard and Thomas D. Lee (2009). "Is patience a virtue? Succession, light, and the death of invasive glossy buckthorn (Frangula alnus)". Biological Invasions. 11 (3). Biological Invasions:Volume 11, Number 3 / March, 2009: 577–586. Bibcode:2009BiInv..11..577C. doi:10.1007/s10530-008-9272-8. S2CID23517872.
Chelsea Cunard and Thomas D. Lee (2009). "Is patience a virtue? Succession, light, and the death of invasive glossy buckthorn (Frangula alnus)". Biological Invasions. 11 (3). Biological Invasions:Volume 11, Number 3 / March, 2009: 577–586. Bibcode:2009BiInv..11..577C. doi:10.1007/s10530-008-9272-8. S2CID23517872.
Chelsea Cunard and Thomas D. Lee (2009). "Is patience a virtue? Succession, light, and the death of invasive glossy buckthorn (Frangula alnus)". Biological Invasions. 11 (3). Biological Invasions:Volume 11, Number 3 / March, 2009: 577–586. Bibcode:2009BiInv..11..577C. doi:10.1007/s10530-008-9272-8. S2CID23517872.