1. S. Aljancic, R. Bojanic, and M. Tomi'c, Sur la valeur asymptotique d'une classe des integrales d6finies, Acad. Serbe Sci. Publ. Inst. Math. vol. 7 (1954) pp. 81-94. 2. E. B. Dynkin, Limit theorems for sums of independent random quantities, Izv. Akad. Nauk SSSR vol. 19 (1955) pp. 247-266 (Russian). 3. E. J. Gumbel, Statistics of extremes, New York, Columbia University Press, 1958. 4. J. Karamata, Sur une mode de croissance reguliere des fonctions, Mathematica (Cluj) vol. 4 (1930) pp. 38-53. 5. S. Karlin and J. McGregor, Occupation time laws for birth and death processes, Technical Report No. 24, Contract Nonr-225(28), Stanford University, July 29, 1960. 6. J. Lamperti, Some limit theorems for stochastic processes, J. Math. Mech. vol. 7 (1958) pp. 433-450. 7. , An occupation time theorem for a class of stochastic processes, Trans. Amer. Math. Soc. vol. 88 (1958) pp. 380-387. 8. W. L. Smith, Asymptotic renewal theorems, Proc. Roy. Soc. Edinburgh. Sect. A vol. 64 (1954) pp. 9-48.