Pattern language recognition and generation pp. 1-38
S. Bozapalidis and A. Kalampakas
Symmetric convex permutominoes and involutions pp. 39-60
F. Disanto and S. Rinaldi
A note on divided ideals pp. 61-64
R. Jahani-Nezhad
Quasi k-ideals in k-regular and intra k-regular semirings pp. 65-74
K. Jana
Pattern avoidance in flattened permutations pp. 75-86
T. Mansour and M. Shattuck