See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/38387068 Spined products of some semigroups Article in Proceedings of the Japan Academy Series A Mathematical Sciences · January 1993 DOI: 10.3792/pjaa.69.357 · Source: OAI CITATIONS 2 READS 53 2 authors: Miroslav Ćirić University of Niš 166 PUBLICATIONS 679 CITATIONS SEE PROFILE Stojan Bogdanović University of Niš 154 PUBLICATIONS 529 CITATIONS SEE PROFILE All content following this page was uploaded by Miroslav Ćirić on 03 November 2014. The user has requested enhancement of the downloaded file.