60Kxx Special processes
 60K05 Renewal theory
 60K10 Applications (reliability, demand theory, etc.)
 60K15 Markov renewal processes, semiMarkov processes
 60K20 Applications of Markov renewal processes (reliability, queueing networks, etc.) [See also 90Bxx]
 60K25 Queueing theory [See also 68M20, 90B22]
 60K30 Applications (congestion, allocation, storage, traffic, etc.) [See also 90Bxx]

60K35 Interacting random processes; statistical mechanics type models; percolation theory [See also 82B43, 82C43]
(2)

60K37 Processes in random environments
(2)
 60K40 Other physical applications of random processes
 60K99 None of the above, but in this section