Siebert W., H., Von Einsiedel, S. and Freiin Truchsess, A. 2003. Improving the wood quality of Pseudotsuga menziesii growing in association with Acacia melanoxylon. Bosque. 24, 3 (Dec. 2003), 75–83. DOI:https://doi.org/10.4067/s0717-92002003000300008.