Teh, L. H., & Clarke, M. J. (2000). Symmetry of tangent stiffness matrices of 3D elastic frame - Closure. JOURNAL OF ENGINEERING MECHANICS-ASCE, 126(6), 663-664. doi:10.1061/(ASCE)0733-9399(2000)126:6(663)
Teh, L. H., & Clarke, M. J. (2000). Symmetry of tangent stiffness matrices of 3D elastic frame - Closure. JOURNAL OF ENGINEERING MECHANICS-ASCE, 126(6), 663-664. doi:10.1061/(ASCE)0733-9399(2000)126:6(663)