@article{10_4064_fm_82_2_121_141,
     author = {B. Schein},
     title = {Representation of involuted semigroups by binary relations},
     journal = {Fundamenta Mathematicae},
     pages = {121--141},
     publisher = {mathdoc},
     volume = {82},
     number = {2},
     year = {1974},
     doi = {10.4064/fm-82-2-121-141},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-82-2-121-141/}
}