Donaldson, L.A., M. Croucher and J.M. Uprichard. "Clonal Variation of Wood Chemistry Variables in Radiata Pine (Pinus Radiata D. Don.) Wood" Holzforschung - International Journal of the Biology, Chemistry, Physics and Technology of Wood, 51.6 (2009): 537-542. Retrieved 19 May. 2013, from doi:10.1515/hfsg.1997.51.6.537

Donaldson, L., Croucher, M. & Uprichard, J. (2009). Clonal Variation of Wood Chemistry Variables in Radiata Pine (Pinus Radiata D. Don.) Wood. Holzforschung - International Journal of the Biology, Chemistry, Physics and Technology of Wood, 51(6), pp. 487-584. Retrieved 19 May. 2013, from doi:10.1515/hfsg.1997.51.6.537

Donaldson, L.A., M. Croucher and J.M. Uprichard. 2009. Clonal Variation of Wood Chemistry Variables in Radiata Pine (Pinus Radiata D. Don.) Wood. Holzforschung - International Journal of the Biology, Chemistry, Physics and Technology of Wood. 51(6): 487-584. Retrieved 19 May. 2013, from doi:10.1515/hfsg.1997.51.6.537