Rewriting a Semigroup Presentation. - Colin M. Campbell; Edmund F. Robertson; Nikola Ruskuc; Richard M. Thomas (Int. J. Algebra Comput., 1995)

On Subsemigroups and ideals in Free Products of Semigroups. - Colin M. Campbell; Edmund F. Robertson; Nikola Ruskuc; Richard M. Thomas (Int. J. Algebra Comput., 1996)

Confluent Monadic String-Rewriting Systems and Automatic Structures. - Friedrich Otto; Nikola Ruskuc (J. Autom. Lang. Comb., 2001)

Automatic semigroups. - Colin M. Campbell; Edmund F. Robertson; Nikola Ruskuc; Richard M. Thomas (Theor. Comput. Sci., 2001)

Automatic Semigroups with Subsemigroups of Finite Rees Index. - Michael Hoffmann 002; Richard M. Thomas; Nikola Ruskuc (Int. J. Algebra Comput., 2002)

Computing Transformation Semigroups. - Steve Linton; Götz Pfeiffer; Edmund F. Robertson; Nikola Ruskuc (J. Symb. Comput., 2002)

Partially Well-Ordered Closed Sets of Permutations. - Mike D. Atkinson; Max Murphy 001; Nikola Ruskuc (Order, 2002)

Sorting with two ordered stacks in series. - Mike D. Atkinson; Max Murphy 001; Nikola Ruskuc (Theor. Comput. Sci., 2002)

Regular closed sets of permutations. - Michael H. Albert; Mike D. Atkinson; Nikola Ruskuc (Theor. Comput. Sci., 2003)

The Insertion Encoding of Permutations. - Michael H. Albert; Steve Linton; Nikola Ruskuc (Electron. J. Comb., 2005)

Pattern Avoidance Classes and Subpermutations. - Mike D. Atkinson; Maximillian M. Murphy; Nikola Ruskuc (Electron. J. Comb., 2005)

Subsemigroups of the Bicyclic Monoid. - Luís Descalço; Nikola Ruskuc (Int. J. Algebra Comput., 2005)

Finite Presentability of HNN Extensions of Inverse Semigroups. - Ersebet R. Dombi; Nick D. Gilbert; Nikola Ruskuc (Int. J. Algebra Comput., 2005)

Automatic Presentations for Cancellative Semigroups. - Alan J. Cain; Graham P. Oliver; Nikola Ruskuc; Richard M. Thomas (LATA, 2008)

Pattern classes of permutations via bijections between linearly ordered sets. - Sophie Huczynska; Nikola Ruskuc (Eur. J. Comb., 2008)

Simple permutations: Decidability and unavoidable substructures. - Robert Brignall; Nikola Ruskuc; Vincent Vatter (Theor. Comput. Sci., 2008)

Automatic presentations for semigroups. - Alan J. Cain; Graham P. Oliver; Nikola Ruskuc; Richard M. Thomas (Inf. Comput., 2009)

Growth Rates for Subclasses of Av(321). - Michael H. Albert; M. D. Atkinson; Robert Brignall; Nikola Ruskuc; Rebecca Smith 001; J. West (Electron. J. Comb., 2010)

Automatic Presentations and Semigroup Constructions. - Alan J. Cain; Graham P. Oliver; Nikola Ruskuc; Richard M. Thomas (Theory Comput. Syst., 2010)

On convex permutations. - Michael H. Albert; Steve Linton; Nikola Ruskuc; Vincent Vatter; Steve Waton (Discret. Math., 2011)

Substitution-closed pattern classes. - M. D. Atkinson; Nikola Ruskuc; Rebecca Smith 001 (J. Comb. Theory A, 2011)

Deciding Word Problems of Semigroups using Finite State Automata - Max Neunhöffer; Markus Pfeiffer; Nik Ruskuc (CoRR, 2012)

Subalgebras of FA-presentable algebras - Alan J. Cain; Nikola Ruskuc (CoRR, 2012)

Unary FA-Presentable Semigroups. - Alan J. Cain; Nikola Ruskuc; Richard M. Thomas (Int. J. Algebra Comput., 2012)

Every Group is a Maximal Subgroup of the Free Idempotent Generated Semigroup over a band. - Igor Dolinka; Nik Ruskuc (Int. J. Algebra Comput., 2013)

Well quasi-order in combinatorics: embeddings and homomorphisms. - Sophie Huczynska; Nik Ruskuc (Surveys in Combinatorics, 2015)

Homomorphic Image Orders on Combinatorial Structures. - Sophie Huczynska; Nik Ruskuc (Order, 2015)

On the star-height of factor counting languages and their relationship to Rees zero-matrix semigroups. - Tom Bourne; Nik Ruskuc (CoRR, 2016)

On the star-height of subword counting languages and their relationship to Rees zero-matrix semigroups. - Tom Bourne; Nik Ruskuc (Theor. Comput. Sci., 2016)

On well quasi-order of graph classes under homomorphic image orderings. - Sophie Huczynska; Nikola Ruskuc (Eur. J. Comb., 2017)

Rationality for subclasses of 321-avoiding permutations. - Michael H. Albert; Robert Brignall; Nik Ruskuc; Vincent Vatter (Eur. J. Comb., 2019)

Generating subdirect products. - Peter Mayr 001; Nik Ruskuc (J. Lond. Math. Soc., 2019)

Bounded homomorphisms and finitely generated fiber products of lattices. - William J. DeMeo; Peter Mayr 001; Nik Ruskuc (Int. J. Algebra Comput., 2020)

Right noetherian semigroups. - Craig Miller; Nik Ruskuc (Int. J. Algebra Comput., 2020)

Atomicity and Well Quasi-Order for Consecutive Orderings on Words and Permutations. - M. McDevitt; Nikola Ruskuc (SIAM J. Discret. Math., 2021)

On the number of countable subdirect powers of unary algebras. - Nik Ruskuc; Bill de Witt (Int. J. Algebra Comput., 2023)

Decidability of Well Quasi-Order and Atomicity for Equivalence Relations Under Embedding Orderings. - Victoria Ironmonger; Nikola Ruskuc (Order, 2024)