his paper has established a connection with previous work in stochastic collision–coalescence (e.g., Telford 1955; Robertson 1974) and the broader field related to the Erlang and generalized- Erlang distributions such as statistical signal processing and queueing theory (Evans et al. 2000; Porter and Ogilvie 2000; Syski 1986). In that spirit we illustrate how a droplet size distribution is obtained from the generalized Erlang distributions described in the main paper.

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