@article{700768,
     title = {On the saturation of a topological partial algebra with respect  to a congruence relation},
     booktitle = {General Topology and its Relations to Modern Analysis and Algebra},
     series = {GDML\_Books},
     publisher = {Academia Publishing House of the Czechoslovak Academy of Sciences},
     address = {Praha},
     year = {1972},
     pages = {151-153},
     mrnumber = {MR0351962},
     zbl = {0309.22003},
     url = {http://dml.mathdoc.fr/item/700768}
}

Grimeisen, G. On the saturation of a topological partial algebra with respect  to a congruence relation, dans General Topology and its Relations to Modern Analysis and Algebra, GDML_Books,  (1972), pp. 151-153. http://gdmltest.u-ga.fr/item/700768/