@article{SF_1982__24_134542,
     author = {J. Meakin},
     title = {Local semilattices on two generators.},
     journal = {Semigroup forum},
     pages = {95--116},
     publisher = {mathdoc},
     volume = {24},
     year = {1982},
     zbl = {0489.20049},
     url = {http://geodesic.mathdoc.fr/item/SF_1982__24_134542/}
}