Dresher, M. The Mathematics of Games of Strategy: Theory and Applications. New York: Dover, 1981.Hardy, G. H.; Littlewood, J. E.; and Pólya, G. Inequalities, 2nd ed. Cambridge, England: Cambridge University Press, pp. 152-155, 1988.Jeffreys, H. and Jeffreys, B. S. "Integration: Riemann, Stieltjes." §1.10 in Methods of Mathematical Physics, 3rd ed. Cambridge, England: Cambridge University Press, pp. 26-36, 1988.Kestelman, H. "Riemann-Stieltjes Integration." Ch. 11 in Modern Theories of Integration, 2nd rev. ed. New York: Dover, pp. 247-269, 1960.Pollard, S. Quart. J. Math.49, 73-138, 1923.Stieltjes, T. J. "Recherches sur les fractions continues." Ann. d. fac. d. sciences Toulouse8, No. 4, J1-J122, 1894.Widder, D. V. Ch. 1 in The Laplace Transform. Princeton, NJ: Princeton University Press, 1941.