CEULEMANS, R., R. F. STETTLER, T. M. HINCKELY, J. G. ISEBRANDS and P. E. HEILMAN (1990): Crown architecture of Populus clones as determined by branch orientation and branch characteristics. Tree Physiol. 7: 157-167.10.1093/treephys/7.1-2-3-4.157
DEBELL, J. D., B. L. GARTNER and D. S. DEBELL (1998): Fiber length in young hybrid Populus stems grown at extremely different rates. Can. J. For. Res. 28: 603-608.
KLASNJA, S., S. KOPITOVIC and S. ORLOVIC (2003): Variability of some wood properties of eastern cottonwood (Populus deltoides Bartr.) clones. Wood Sci. Tech. 37: 331-337.
LIEVEN, D. B., V. DRIES, V. A. JORIS and S. MARC (2007): End-use related physical and mechanical properties of selected fast-growing poplar hybrids (Populus trichocarpa × P. deltoides). Ann. For. Sci. 64: 621-630.
O’NEIL, M. K., C. C. SHOCK and K. A. LOMBARD (2010): Hybrid poplar (Populus ssp.) selections for arid and semi-arid intermountain regions of the western United States. Agroforestry Syst 79: 409-418.10.1007/s10457-010-9286-y
QIN, G. H., Y. Z. JIANG and Y. L. QIAO (2003): Study on the introduction of poplar S307-26 and PE-19-66 in Shandong Province. Journal of Jiangsu Forestry Science & Technology 30(8): 1-6.
RAJORA, O. P., L. ZSUFFA and F. C. YEH (1994): Variation, inheritance and correlations of growth characters and melampsora leaf rust resistance in full-sib families of Populus. Silvae Genetica 43 (4): 219-226.
REDEI, K. (2000): Early performance of promising white poplar (Populus alba) clones in sandy ridges between the rivers Danube and Tisza in Hungary. Forestry 73(4): 407-413.10.1093/forestry/73.4.407
RIEMENSCHNEIDER, D. E., B. E. MCMAHON and M. E. OSTRY (1994): Population-dependent selection strategies needed for 2-year-old black cottonwood clones. Can J. For. Res. 24: 1704-1710.
STEENACKERS, J., M. STEENACKERS, V. STEENACKERS and M. STEVENS (1996): Poplar diseases, consequences on growth and wood quality. Biomass Bioenergy 10: 267-274.10.1016/0961-9534(95)00121-2