Multiplicities of covers for sofic shifts. - Doris Fiebig; Ulf-Rainer Fiebig; Natasa Jonoska (Theor. Comput. Sci., 2001)

Compact factors of countable state Markov shifts. - Doris Fiebig; Ulf-Rainer Fiebig (Theor. Comput. Sci., 2002)