Bingham, N. H. and Doney, R. A. (1974) Asymptotic properties of supercritical branching processes. I: The Galton–Watson process. Adv. Appl. Prob.
De Meyer, A. (1982) On a theorem of Bingham and Doney. J. Appl. Prob.
De Meyer, A. and Teugels, J. L. (1980) On the asymptotic behaviour of the distributions of the busy period and service time in M/G/1. J. Appl. Prob.
Evans, L. S. (1978) An upper bound for the mean of Yaglom's limit. J. Appl. Prob.
Feller, W. (1971) An Introduction to Probability Theory and its Applications, Vol. II, 2nd edn. Wiley, New York.
Jagers, P. (1975) Branching Processes with Biological Applications.
Wiley, New York.
Yaglom, A. M. (1947) Certain limit theorems of the theory of branching random processes (in Russian). Soviet Math. Dokl.