Citation: M. Petrich, A SPECIAL SUBLATTICE OF THE CONGRUENCE LATTICE OF A REGULAR SEMIGROUP, Proceedings of the Edinburgh Mathematical Society, 40, 1997, pp. 457-472
Citation: M. Petrich et al., THE SYNTACTIC MONOID OF THE SEMIGROUP GENERATED BY A MAXIMAL PREFIX CODE, Proceedings of the American Mathematical Society, 124(3), 1996, pp. 655-663
Citation: M. Petrich et Cm. Reis, THE SYNTACTIC MONOID OF THE SEMIGROUP GENERATED BY A COMMA-FREE CODE, Proceedings of the Royal Society of Edinburgh. Section A. Mathematics, 125, 1995, pp. 165-179
Citation: M. Petrich, CONGRUENCE NETWORKS FOR COMPLETELY SIMPLE SEMIGROUPS, Journal of the Australian Mathematical Society. Series A. Pure mathematics and statistics, 56, 1994, pp. 243-266
Citation: A. Cherubini et M. Petrich, CHARACTERIZATIONS OF LINEAR CONGRUENCES ON A FREE MONOID, Proceedings of the American Mathematical Society, 119(3), 1993, pp. 719-726