Cyclic Strong Ergodicity in Nonhomogeneous Markov Systems. - Ioannis I. Gerontidis (SIAM J. Matrix Anal. Appl., 1992)

Stochastic Equilibria in Nonhomogeneous Markov Population Replacement Processes. - Ioannis I. Gerontidis (Math. Oper. Res., 1994)

Markov Chain Lumpability on Fuzzy Partitions. - Ioannis I. Gerontidis; Stavros P. Kontakos (FUZZ-IEEE, 2007)

Lumpability of absorbing Markov chains and replacement chains on fuzzy partitions. - Ioannis I. Gerontidis; Ioannis E. Petasakis (FUZZ-IEEE, 2010)