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Dikranyan, D. N. On a conjecture of Prodanov. (English) Zbl 0571.22004 C. R. Acad. Bulg. Sci. 38, 1117-1120 (1985). MSC: 22A05 × Cite Format Result Cite Review PDF
Tkachenko, M. G. On the zero dimensionality of free topological groups. (Russian) Zbl 0566.22004 C. R. Acad. Bulg. Sci. 38, 173-174 (1985). Reviewer: G.Weißenborn MSC: 22A05 × Cite Format Result Cite Review PDF