Here are links to pdfs of papers that'll come in useful as supplementary readings later on in the course.
Paul A. Samuelson, Mathematics of Speculative Price, SIAM Review, Vol, 15, No.Samuelson1973a.pdf 1, Jan 1973, pp 1--42
[Download Samuelson_1973a.pdf]
Paul A. Samuelson, Proof that Properly Discounted Present Values of Assets VIbrate Randomnly, The Bell Journal of Economics and Management Science, Vol. 4, No. 2, 1973, pp. 369--374.
[Download Samuelson_1973b.pdf]
Fischer Black, Noise, Journal of Finance, Vol. 41, Issue 3, Papers and Proceedings of the Forty Fourth Annual Meeting of the American Finance Association, December 20-30, (Jul. 1986), 529--543.
Harry M. Markowitz, Foundations of Portfolio Theory, Journal of Finance, Vol 46., Issue 2, June 1991, pp. 469--477.