@article{700814,
     title = {Remarks on an algebraic structure for a topology},
     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 = {1967},
     pages = {17-21},
     mrnumber = {MR0242102},
     zbl = {0178.01001},
     url = {http://dml.mathdoc.fr/item/700814}
}

Abbott, J. C. Remarks on an algebraic structure for a topology, dans General Topology and its Relations to Modern Analysis and Algebra, GDML_Books,  (1967), pp. 17-21. http://gdmltest.u-ga.fr/item/700814/