[1] Hsieh J. Computed Tomography: Principles, Design, Artifacts, and Recent Advances. Bellingham, WA: SPIE Press, 2003.
[3] Benson-Cooper D M, Knowles R L, Thompson F J, et al. Bull. Forest Research Institute, New Zealand Forest Service, Rotorua, NZ. 1982, 8: 9.
[4] Lindgren L O. Wood Science and Technology, 1991, 25: 425.
[5] Lindgren L O. Wood Science and Technology, 1991, 25: 341.
[6] Espinoza G R, Hernandez R, Condal A, et al. Wood and Fiber Science, 2005, 37(4): 591.
[7] Gjerdrum P, Hib O. Holz als Roh-und Werkstoff, 2004, 62(2): 131.
[8] Schmoldt D L, He J, Abbott A L. Wood and Fiber Science, 2000, 32(3): 287.
[9] Longuetaud F, Leban J M, Mothe F, et al. Computers and Electronics in Agriculture, 2004, 44(2): 107.