Ying Tan Tan, Y., & Matzen, V. (2002). Correlation of in-plane bending test and FEA results for thin-walled elbows. NUCLEAR ENGINEERING AND DESIGN, 217(1-2), 21–39. https://doi.org/10.1016/S0029-5493(02)00137-1 Tan, Y., Wilkins, K., & Matzen, V. (2002). Correlation of test and FEA results for elbows subjected to out-of-plane loading. NUCLEAR ENGINEERING AND DESIGN, 217(3), 213–224. https://doi.org/10.1016/S0029-5493(02)00132-2 Tan, Y., Matzen, V. C., & Yu, L. X. (2002). Correlation of test and FEA results for the nonlinear behavior of straight pipes and elbows. JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME, 124(4), 465–475. https://doi.org/10.1115/1.1493806 Matzen, V. C., & Tan, Y. (2002). The history of the B-2 stress index. JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME, 124(2), 168–176. https://doi.org/10.1115/1.1464564