@article{SF_1995__51_1_135423,
     author = {P.R. Jones},
     title = {E-free objects and {E-locality} for completely regular semigroups.},
     journal = {Semigroup forum},
     pages = {357--378},
     publisher = {mathdoc},
     volume = {51},
     number = {1},
     year = {1995},
     zbl = {0836.20083},
     url = {http://geodesic.mathdoc.fr/item/SF_1995__51_1_135423/}
}