@article{SF_1983__26_134615,
     author = {T. Sait\^o},
     title = {The orderability of regular semigroups.},
     journal = {Semigroup forum},
     pages = {349--374},
     publisher = {mathdoc},
     volume = {26},
     year = {1983},
     zbl = {0508.06016},
     url = {http://geodesic.mathdoc.fr/item/SF_1983__26_134615/}
}