@InCollection{MitStiS_j1997, author = {Victor~Mitrana and Ralf~Stiebe}, title = {The Accepting Power of Finite Automata over Groups}, booktitle = {New Trends in Formal Languages -- Control, Cooperation, and Combinatorics (to J{\"u}rgen Dassow on the occasion of his 50th birthday)}, year = {1997}, pages = {39--48}, publisher = springer, series = {LNCS}, volume = 1218 }