@article{700877,
     title = {Extremal disconnectedness and dyadicity},
     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 = {129-130},
     zbl = {0165.25502},
     url = {http://dml.mathdoc.fr/item/700877}
}

Efimov, B. Extremal disconnectedness and dyadicity, dans General Topology and its Relations to Modern Analysis and Algebra, GDML_Books,  (1967), pp. 129-130. http://gdmltest.u-ga.fr/item/700877/