@article{700794,
     title = {Point-countable bases and quasi-developments},
     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 = {47-50},
     mrnumber = {MR0388333},
     zbl = {0329.54025},
     url = {http://dml.mathdoc.fr/item/700794}
}

Aull, C. E. Point-countable bases and quasi-developments, dans General Topology and its Relations to Modern Analysis and Algebra, GDML_Books,  (1972), pp. 47-50. http://gdmltest.u-ga.fr/item/700794/