[2] Estimation of traffic intensity from queue length data in a deterministic single server queueing system. Journal of Computational and Applied Mathematics (2021).

We investigate a model for a general single server queueing system operating under the earliest due date scheduling rule, which can be interpreted more generally as a dynamic priority queue-discipline ...

We study a single-server queue in which the server takes a vacation whenever the system becomes empty. The service and vacation times and the arrival process are all assumed to be mutually independent ...