@article{700941,
     title = {On the topological product of discrete $\lambda $-compact spaces},
     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 = {1962},
     pages = {[148]-151},
     mrnumber = {MR0149438},
     zbl = {0114.14102},
     url = {http://dml.mathdoc.fr/item/700941}
}

Erdös, P.; Hajnal, A. On the topological product of discrete $\lambda $-compact spaces, dans General Topology and its Relations to Modern Analysis and Algebra, GDML_Books,  (1962), pp. [148]-151. http://gdmltest.u-ga.fr/item/700941/