** A. Amroune and A. Oumhani**
A representation theorem for bounded distributive hyperlattices, pp. 1-12

** J.M. Cornejo and H.P. Sankappanavar**
Implication zroupoids and identities of associative type, pp. 13-34

** A. Daneshkhah and Y. Jalilian**
A characterization of almost simple groups related to L

_{3}(37), pp. 35-40

** I.I. Deriyenko**
Pseudoisomorphisms of quasigroups, pp. 41-44

** W.A. Dudek and V.S. Trokhimenko**
Menger algebras of associative and self-distributive n-ary operations, pp. 45-52

** M.M. Ebrahimi, Kh. Keshvardoost, and M. Mahmoudi**
Retractions of cyclic finitely supported Cb-sets, pp.53-66

** K. Hamidizadeh and G. Aghababaei**
The Cayley graph of commutative ring on triangular subsets, pp. 67-76

** D. Heidari**
There exist semigroups which have bi-bases with different cardinalities, pp. 77-78

** N. Kehayopulu**
A note on hyperideals in ordered hypersemigroups, pp. 79-85

** F. Koorepazan-Moftakhar, A.R. Ashrafi and O. Ori**
Symmetry groups and Graovac-Pisanski index of some linear polymers, pp. 87-102

** S.K. Maity, R. Chatterjee, and R. Ghosh**
Retractive nil-extensions of completely simple semirings, pp. 103-108

** D.N. Moldovyan, N.A. Moldovyan, and V.A. Shcherbacov**
Non-commutative finite associative algebras of 3-dimensional vectors, pp.109-120

** A. Ramin and A. Abbasi**
Torsion-unitary Cayley graph of an R-module as a functor, pp. 121-138

** A. Razaq**
Action of the group {x,y : x

^{2}=y

^{6}=1} on imaginary quadratic fields, pp. 139-148

** Ze Gu**
On bi-ideals of ordered semigroups, pp. 149-154

**
**

### vol.26 (2018) No. 2