1. On independent varieties and some related notions

   • Tomasz Kowalski
   • Francesco Paoli
   • Antonio Ledda

   OriginalPaper 25 July 2013 Pages: 107 - 136

2. Menger algebras of n-place interior operations

   • Wieslaw A. Dudek
   • Valentin S. Trokhimenko

   OriginalPaper Open access 25 July 2013 Pages: 137 - 147

3. More covers of the Boolean variety of unital ℓ-groups

   • Michael R. Darnel
   • W. Charles Holland

   OriginalPaper 07 June 2013 Pages: 149 - 162

4. A review of some of Bjarni Jónsson’s results on representation of arguesian lattices

   • Christian Herrmann

   OriginalPaper 05 June 2013 Pages: 163 - 174

5. Meet-irreducible submaximal clones determined by nontrivial equivalence relations

   • Etienne R. A. Temgoua

   OriginalPaper 23 July 2013 Pages: 175 - 196

6. On the hull-kernel and inverse topologies as frames

   • Themba Dube

   OriginalPaper 25 July 2013 Pages: 197 - 212