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Hadi, M. H. WEAK SEPARATION AXIOMS VIA 𝑫𝝎, 𝑫𝜶−𝝎, 𝑫𝒑𝒓𝒆−𝝎, 𝑫𝒃−𝝎, AND 𝑫𝜷−𝝎 -SETS. ESJ 2013, 9.