The ranks of ideals in various transformation monoids." *Communications in Algebra (DOI:10.1080/00927872.2013.847946) *. 43.2 (2015): 674-692. AbstractWebsite

"A new class of divisors of semigroups of isotone mappings of finite chains." *Izv. Vyssh. Uchebn. Zaved. Mat.* (2002): 51-59.

"Congruences on monoids of transformations preserving the orientation of a finite chain." *J. Algebra*. 321 (2009): 743-757.Website

"On the rank of semigroups of transformations on a finite set with restricted range." *Algebra Colloquium*. 21.3 (2014): 497-510.

"Presentations for some monoids of partial transformations on a finite chain." *Comm. Algebra*. 33 (2005): 587-604.Website

"On the monoids of transformations that preserve the order and a uniform partition." *Communications in Algebra*. 39.8 (2011): 2798-2815.

"Endomorphisms of semigroups of order-preserving partial transformations." *Semigroup Forum (10.1007/s00233-018-9948-z)*. 99 (2019): 333-344. AbstractWebsite

"Semigroups of order preserving mappings on a finite chain: a new class of divisors." *Semigroup Forum*. 54 (1997): 230-236.Website

"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

"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

"A division theorem for the pseudovariety generated by semigroups of orientation preserving transformations on a finite chain." *Comm. Algebra*. 29 (2001): 451-456.Website

"The Vagner-Preston representation of a block-group." *Southeast Asian Bull. Math.*. 45.6 (2021): 805-812. AbstractWebsite

"The cardinal of various monoids of transformations that preserve a uniform partition." *Bulletin of the Malaysian Mathematical Sciences Society*. 35.4 (2012): 885-896.

"On orientation-preserving transformations of a chain." *Communications in Algebra (DOI 10.1080/00927872.2020.1870996)*. 49.6 (2021): 2300-2325. AbstractWebsite

"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

" "

The monoid of all injective orientation preserving partial transformations on a finite chain." *Comm. Algebra*. 28 (2000): 3401-3426.Website

"On semigroups of orientation-preserving transformations with restricted range." *Communications in Algebra (DOI:10.1080/00927872.2014.975345)*. 44.1 (2016): 253-264. AbstractWebsite

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

"The monoid of all injective order preserving partial transformations on a finite chain." *Semigroup Forum*. 62 (2001): 178-204.

"On semigroups of endomorphisms of a chain with restricted range." *Semigroup Forum (DOI: 10.1007/s00233-013-9548-x)*. 89.1 (2014): 77-104. AbstractWebsite

"Presentations for some monoids of partial transformations on a finite chain: a survey." *Semigroups, algorithms, automata and languages (Coimbra, 2001)*. World Sci. Publ., River Edge, NJ, 2002. 363-378.

"On the ranks of certain monoids of transformations that preserve a uniform partition." *Communications in Algebra*. 42.2 (2014): 615-636.

"Presentations for some monoids of injective partial transformations on a finite chain." *Southeast Asian Bull. Math.*. 28 (2004): 903-918.

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