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• Commentationes Mathematicae Universitatis Carolinae
• Volume 30
• Issue 4

Author: Ponomarev, S. P.

• Ponomarev, S. P.: On some characterizations of quasiregularity. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 38 (1997), issue 2, pp. 13-18
• Ponomarev, S. P.: On some descriptive characterizations of the $n^{-1}$-property. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 37 (1996), issue 2, pp. 65-69