1. On simple quadratures;Davis, Philip;Proc. Amer. Math. Soc.,1953
2. I. J. Schoenberg, Approximations: Theory and Practice, Notes by L. H. Lange on a series of lectures at Stanford University, Stanford, Calif., 1955.
3. On the analytic continuation of mapping functions;Davis, Philip;Trans. Amer. Math. Soc.,1958