5Xiping Wang,Robert J.Ross,Peter Carter. Acoustic Evaluation of Wood Quality in Standing Trees. Part I. Acoustic Wave Behavior [ J ].Wood and Fiber Science, 2007,39 ( 1 ) : 28-38.
6Xiping Wang.Acoustic Measurements on Trees and Logs: A Review and Analysis[J].Wood Sci Technol,2013(47):965-975.
7Houjiang Zhang, Xiping Wang, Rober J.Ross.Stress Wave Propagation on Standing Trees -Part 1. Time -of -Flight Measurement and 2D Stress Wave Contour Maps [R].16th International Symposium on Nondestructive Testing and Evaluation of Wood.
8Juan Su, Houjiang Zhang,Xiping Wang.Stress Wave Propagation on Standing Trees-Part 2. Formation of 3D Stress Wave Contour Maps[R].16th International Symposium on Nondestructive Testing and Evaluation of Wood.
9Burmester,A. Relationship between sound velocity and the morphological,physical,and mechanical properties of wood [J]. Holz als Roh-und Werkstoff, 1965,23(6):227-236.
10Gerhards, C.C. Stress wave speed and MOE of Sweetgum ranging from 150% to 15% MC[J].Forest Products Journal,1975,25(4): 51-57.
