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Received April 22, 2013
A.V. Arhangel’skii — Distinguished Professor Emeritus, Department of Mathematics, Ohio
University, Athens OH, 45701, U.S.A.
ISSN 1812-3368. Вестник МГТУ им. Н.Э. Баумана. Сер. “Естественные науки”. 2013. № 2
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