- Mark Kambites. On Uniform Decision Problems and Abstract Properties of Small Overlap Monoids. IJAC, 21(1-2):217-233, 2011.
- Mohan S. Putcha. Root Semigroups in reductive Monoids. IJAC, 21(3):433-448, 2011.
- Bettina Eick, Dörte Feichtenschlager. Computation of Low-Dimensional (Co)Homology Groups for Infinite Sequences of P-Groups with Fixed Coclass. IJAC, 21(4):635-649, 2011.
- Csaba Szabó, Vera Vértesi. The Equivalence Problem over Finite Rings. IJAC, 21(3):449-457, 2011.
- Bokhee Im, Jonathan D. H. Smith. Representation Theory for Varieties of Comtrans Algebras and Lie Triple Systems. IJAC, 21(3):459-472, 2011.
- Patrick Dehornoy. The Subword Reversing Method. IJAC, 21(1-2):71-118, 2011.
- V. A. Bovdi, Alexander Konovalov, Steve Linton. Torsion Units in Integral Group Rings of Conway Simple Groups. IJAC, 21(4):615-634, 2011.
- Katarzyna Matczak, Anna B. Romanowska, Jonathan D. H. Smith. Dyadic Polygons. IJAC, 21(3):387-408, 2011.
- Lev M. Shneerson, David Easdown. Growth of Finitely Presented Rees Quotients of Free Inverse Semigroups. IJAC, 21(1-2):315-328, 2011.
- Bartosz M. Jablonski, Anna B. Romanowska. On Mode Reducts of Semimodules. IJAC, 21(3):485-504, 2011.