@article {475,
	title = {The maximal subsemigroups of semigroups of transformations preserving or reversing the orientation on a finite chain},
	journal = {Publicationes Mathematicae Debrecen},
	volume = {81},
	year = {2012},
	pages = {11-29},
	author = {Dimitrova, I. and Fernandes, V{\'\i}tor H. and Koppitz, J.}
}
