1. Totoki, H. (1966) Time Changes of Flows, Mem. Fac. Sci. Kyushu Univ., Ser. A, 20, pp. 27–55.
2. Matthes, K., Kerstan, J. and Mecke, J. (1978) Infinitely Divisible Point Processes, 2nd ed., Wiley, New York.
3. Mecke, J. (1967) Stationäre zufällige Masse auf lokal kompakten Abelschen Gruppen, Z. Wahrsch Verw. Gebiete, 9, pp. 36–58.
4. Brumelle, D. (1971) On the Relation Between Customer and Time Average in Queues, J. Appl. Probab., 2, pp. 508–520.
5. Slivnyak, I.M. (1962) Some Properties of Stationary Flows of Homogeneous Random Events, Theory Probab. Appl., 7, pp. 347–352.