@article{ADM_2015_19_2_a1,
     author = {Paula Catarino and Peter M. Higgins and Inessa Levi},
     title = {On inverse subsemigroups of the semigroup of orientation-preserving or orientation-reversing transformations},
     journal = {Algebra and discrete mathematics},
     pages = {162--171},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2015_19_2_a1/}
}