Sanjay D. Nikhade, R. K. G. V. R. G. S. G. S. “Composite Material Mechanical Characteristics Analysis by Non-Linear Regression and Error-Analysis Using Co-Relation Matrix for Experimented Data”. Design Engineering, Oct. 2021, pp. 4841-63, http://www.thedesignengineering.com/index.php/DE/article/view/5432.