@article{701878,
     title = {Characterizations of the countable infinite product of rationals and some related problems},
     booktitle = {Proceedings of the 13th Winter School on Abstract Analysis},
     series = {GDML\_Books},
     publisher = {Circolo Matematico di Palermo},
     address = {Palermo},
     year = {1985},
     pages = {[37]-54},
     mrnumber = {MR0897969},
     zbl = {0642.54033},
     url = {http://dml.mathdoc.fr/item/701878}
}

van Engelen, Fons. Characterizations of the countable infinite product of rationals and some related problems, dans Proceedings of the 13th Winter School on Abstract Analysis, GDML_Books,  (1985), pp. [37]-54. http://gdmltest.u-ga.fr/item/701878/