Normality and paracompactness of Pixley-Roy hyperspaces
Normality and paracompactness in finite and countable Cartesian products
Products of perfectly normal spaces
Normality and paracompactness in subsets of product spaces
On σ-discrete coverings consisting of connected sets
A note on collectionwise normality and product spaces
Continuous extenders in normal and collectionwise normal spaces
Separable extensions of first countable spaces
First countable and countable spaces all compactifications of which contain βN
On Martin's axiom and perfect spaces
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