An embargo is an old, but not always proved instrument of trade policy. In their original sense embargo measures served the prevention of deliveries of militarily important goods to belligerent countries, and thus had a passive and neutral character. Later on, however, they were increasingly...

It is our aim to improve the limit theory of supercritical Bienaymé--Galton--Watson processes with varying environment (cf. [3], [4]), and to simultaneously construct its continuous-time analogue. We give a necessary and sufficient condition for the existence of a non-degenerate limit with...

This paper considers the asymptotic theory of the varying environment Galton-Watson process with a countable set of types. This paper examines the convergence in Lp and almost surely of the numbers of the various types when normalised by the corresponding expected number. The harmonic functions...