Lobachevskii Journal of Mathematics
Niovi Kehayopulu
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Volume XI
A note on minimal and maximal ideals of ordered semigroups
Volume XI
A note on pseudocongruences in semigroups
Volume XIII
The embedding of an ordered semigroup into an le-semigroup
Volume XIII
A note on semi-pseudoorders in semigroups
Volume XVIII
On ordered left groups
Volume XXI
Fuzzy interior ideals in ordered semigroups
Volume XXII
Decomposition of commutative ordered semigroups into archimedean components
Volume XXVII
Weakly prime and prime fuzzy ideals in ordered semigroups
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