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- [3] PSEUDOCOMPACT AND PERFECTLY NORMAL SPACES ACTA MATHEMATICA ACADEMIAE SCIENTIARUM HUNGARICAE, 1974, 25 (3-4): : 289 - 290
- [6] LEXICOGRAPHIC PRODUCTS AND PERFECTLY NORMAL SPACES AMERICAN MATHEMATICAL MONTHLY, 1971, 78 (05): : 533 - &
- [7] INSERTION THEOREM FOR PERFECTLY NORMAL SPACES NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1975, 22 (04): : A482 - A483
- [9] COUNTABLY COMPACT, PERFECTLY NORMAL SPACES JOURNAL OF THE LONDON MATHEMATICAL SOCIETY-SECOND SERIES, 1976, 14 (DEC): : 505 - 516