Nelson, Lee H. (1996). "Early Wooden Truss Connections vs. Wood Shrinkage: From Mortise-and-Tenon Joints to Bolted Connections". APT Bulletin. 27 (1/2): 11–23. doi:10.2307/1504495. JSTOR1504495.
Nelson, Lee H. (1996). "Early Wooden Truss Connections vs. Wood Shrinkage: From Mortise-and-Tenon Joints to Bolted Connections". APT Bulletin. 27 (1/2): 11–23. doi:10.2307/1504495. JSTOR1504495.