@article{SF_1974__8_134047,
     author = {H. Subramanian and T.R. Sundararaman},
     title = {Precomplete varieties of semigroups.},
     journal = {Semigroup forum},
     pages = {278--281},
     publisher = {mathdoc},
     volume = {8},
     year = {1974},
     zbl = {0287.20060},
     url = {http://geodesic.mathdoc.fr/item/SF_1974__8_134047/}
}