[2] MARJANOVlĆ M. M.:
Exponentially complete spaces III. Publ. Inst. Math., Beograd, t. 14 (28) (1972), 97-109.
MR 0394539
[3] MARJANOVlĆ M. M.:
Numerical invariants of O-dimensional spaces and their Cartesian multiplication. Publ. Inst.Math., Beograd, t. 17 (31) (1974), 113-120.
MR 0365454
[4] TRNKOVÁ V.:
Representations of commutative semigroups by products of topological spaces. Proc. Fifth Prague Topol. Symp. 1981, Berlin (1982), 631-641.
MR 0698467
[5] VUČEMILOVIČ A.:
On countable spaces. Mathematica Balcanica, 4. 127 (1974), 669-674.
MR 0377838