In the last year or two the number of ad hoc record‐listing projects in this country has increased quite dramatically. After a long period during which any such initiatives were few and far between, the regular, long‐term work of the major libraries and of the various central and local...

We consider a new class of time series models (introduced by Engle & Russell 1998) used in statistical applications in finance. These models treat the time between events (durations) as a stochastic process and the corresponding durations are modelled using a theory similar to that of...