“Analysis of Accuracy of Williams Series Approximation of Stress Field in Cracked Body – Influence of Area of Interest Around Crack-Tip on Multi-Parameter Regression Performance”. Frattura ed Integrità Strutturale 11, no. 39 (December 15, 2016): Pages 129–142. Accessed September 25, 2024. https://ww3.fracturae.com/index.php/fis/article/view/1827.