On the number of Hv-rings with P-hyperoperations. - Stephanos Spartalis (Discret. Math., 1996)

C-hypergroupoids obtained by special binary relations. - Stephanos Spartalis; M. Konstantinidou-Serafimidou; A. Taouktsoglou (Comput. Math. Appl., 2010)

Comparison of Self Organizing Maps Clustering with Supervised Classification for Air Pollution Data Sets. - Ilias Bougoudis; Lazaros S. Iliadis; Stephanos Spartalis (AIAI, 2014)