| Fuzzy sets in ordered groupoids N Kehayopulu, M Tsingelis Semigroup forum 65, 128-132, 2002 | 248 | 2002 |
| Fuzzy bi-ideals in ordered semigroups N Kehayopulu, M Tsingelis Information sciences 171 (1-3), 13-28, 2005 | 157 | 2005 |
| Regular ordered semigroups in terms of fuzzy subsets N Kehayopulu, M Tsingelis Information Sciences 176 (24), 3675-3693, 2006 | 142 | 2006 |
| On subdirectly irreducible ordered semigroups N Kehayopulu, M Tsingelis Semigroup Forum 50, 161-177, 1995 | 99 | 1995 |
| Fuzzy interior ideals in ordered semigroups N Kehayopulu, M Tsingelis Lobachevskii Journal of Mathematics 21 (0), 65-71, 2006 | 80 | 2006 |
| Pseudoorder in ordered semigroups N Kehayopulu, M Tsingelis Semigroup Forum 50, 389-392, 1995 | 73 | 1995 |
| The embedding of an ordered groupoid into a poe-groupoid in terms of fuzzy sets N Kehayopulu, M Tsingelis Information Sciences 152, 231-236, 2003 | 70 | 2003 |
| On Left Regular Ordered Semigroups. N Kehayopulu, M Tsingelis Southeast Asian Bulletin of Mathematics 25 (4), 2002 | 63 | 2002 |
| Fuzzy ideals in ordered semigroups N Kehayopulu, M Tsingelis Quasigroups and Related Systems 18 (2), 279-289, 2007 | 43 | 2007 |
| A note on fuzzy sets in semigroups N Kehayopulu, M Tsingelis Sci. Math 2 (3), 411-413, 1999 | 39 | 1999 |
| A characterization of prime and semiprime ideals of groupoids in terms of fuzzy subsets N Kehayopulu, XY Xie, M Tsingelis Soochow Journal of Mathematics 27 (2), 139-144, 2001 | 38 | 2001 |
| Ideal extensions of ordered semigroups N Kehayopulu, M Tsingelis Communications in Algebra 31 (10), 4939-4969, 2003 | 34 | 2003 |
| On the decomposition of prime ideals of ordered semigroups into theirN N Kehayopulu, M Tsingelis Semigroup Forum 47, 393-395, 1993 | 32 | 1993 |
| On weakly commutative ordered semigroups. K Niovi, T Michael Semigroup Forum 56 (1), 1998 | 30 | 1998 |
| Fuzzy right, left, quasi-ideals, bi-ideals in ordered semigroups N Kehayopulu, M Tsingelis Lobachevskii Journal of Mathematics 30, 17-22, 2009 | 29 | 2009 |
| Bi-ideals in ordered semigroups and ordered groups N Kehayopulu, JS Ponizovskii, M Tsingelis Journal of Mathematical Sciences 112, 4353-4354, 2002 | 28 | 2002 |
| Left regular and intra-regular ordered semigroups in terms of fuzzy subsets K Niovi, T Michael Quasigroups and Related Systems 16 (2), 169-178, 2006 | 23 | 2006 |
| Characterization of some types of ordered semigroups in terms of fuzzy sets N Kehayopulu, M Tsingelis Lobachevskii Journal of Mathematics 29, 14-20, 2008 | 18 | 2008 |
| On right regular and right duo ordered semigroups K Niovi, L George, T Michael Mathematica japonicae 46 (2), 311-315, 1997 | 18 | 1997 |
| Archimedean ordered semigroups as ideal extensions N Kehayopulu, M Tsingelis Semigroup Forum 78, 343-348, 2009 | 16 | 2009 |
