@article{SF_1984__30_134723,
     author = {M.S. Putcha},
     title = {Reductive groups and regular semigroups.},
     journal = {Semigroup forum},
     pages = {253--262},
     publisher = {mathdoc},
     volume = {30},
     year = {1984},
     zbl = {0535.20036},
     url = {http://geodesic.mathdoc.fr/item/SF_1984__30_134723/}
}