Abelian kernels of monoids of order-preserving maps and of some of its extensions." *Semigroup Forum*. 68 (2004): 335-356.Website

"Abelian kernels of some monoids of injective partial transformations and an application." *Semigroup Forum*. 61 (2000): 435-452.Website

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"Bilateral semidirect product decompositions of transformation monoids." *Semigroup Forum*. 82 (2011): 271-287. Abstract

"The cardinal and the idempotent number of various monoids of transformations on a finite chain." *Bulletin of the Malaysian Mathematical Sciences Society*. 34.2 (2011): 79-85. Abstract

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"Endomorphisms of the semigroup of order-preserving mappings." *Semigroup Forum*. 81 (2010): 277-285.Website

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Largest 2-generated subsemigroups of the symmetric inverse semigroup." *Proc. Edinb. Math. Soc. (2)*. 50 (2007): 551-561.Website

"The maximal subsemigroups of semigroups of transformations preserving or reversing the orientation on a finite chain." *Publicationes Mathematicae Debrecen*. 81.1-2 (2012): 11-29.

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A note on bilateral semidirect product decompositions of some monoids of order-preserving partial permutations." *Bull. Korean Math. Soc.*. 53.2 (2016): 495-506. AbstractWebsite

"A note on generators of the endomorphism semigroup of an infinite countable chain." *Journal of Algebra and its Applications (DOI: 10.1142/S0219498817500311)*. 16 (2017): 1750031 (9 pages). AbstractWebsite

"On divisors of pseudovarieties generated by some classes of full transformation semigroups." *Algebra Colloq.*. 15 (2008): 581-588.

"On divisors of semigroups of order-preserving mappings of a finite chain." *Semigroup Forum*. 81 (2010): 551-554.Website

"On generators and relations for unions of semigroups." *Semigroup Forum*. 63 (2001): 49-62.

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