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2. ASTM (2010b). Standard practice for establishing structural grades and related allowable properties for visually graded lumber. D 245-06. West Conshohocken, PA: ASTM International.
3. ASTM (2010c). Standard practice for establishing allowable properties for visually-graded dimension lumber from in-grade tests of full-size specimens. D 1990-07. West Conshohocken, PA: ASTM International.
4. ASTM (2010d). Standard specification for computing reference resistence of wood-based materials and structural connections for load and resistance factor design. D 5457-04a. West Conshohocken, PA: ASTM International.
5. A Continuous, Bivariate Exponential Extension