@article{SF_1980__20_134409,
     author = {A. Anjaneyulu},
     title = {Primary ideals in semigroups.},
     journal = {Semigroup forum},
     pages = {129--144},
     publisher = {mathdoc},
     volume = {20},
     year = {1980},
     zbl = {0441.20041},
     url = {http://geodesic.mathdoc.fr/item/SF_1980__20_134409/}
}