Bhimashankaram, P., T. Parthasarathy, A. L. N. Murthy, and G. S. R. Murthy. 2012. ‚ÄúComplementarity Problems And Positive Definite Matrices‚ÄĚ. Algorithmic Operations Research 7 (2). https://journals.lib.unb.ca/index.php/AOR/article/view/20398.