%0 Journal Article %J Publicationes Mathematicae Debrecen %D 2012 %T The maximal subsemigroups of semigroups of transformations preserving or reversing the orientation on a finite chain %A Dimitrova, I. %A Fernandes, VĂ­tor H. %A Koppitz, J. %N 1-2 %P 11-29 %V 81