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• Al-Aree…, S. M. and Abdelhakiem, K. M. Operation-separation axioms in bitopological spaces, An. ¸St. Univ. Ovidius Constanta (2009), 17(2), 5-18. Current address : Merve ·Ilkhan: DEPARTMENT OF MATHEMATICS, DUZCE UNIVER
• SITY, DÜZCE, TURKEY. E-mail address : merveilkhan@gmail.com Current address : Mahmut Akyi¼git: DEPARTMENT OF MATHEMATICS, SAKARYA UNI
• VERSITY, SAKARYA, TURKEY. E-mail address : makyigit@sakarya.edu.tr Current address : Emrah Evren Kara: DEPARTMENT OF MATHEMATICS, DUZCE UNI
• VERSITY, DÜZCE, TURKEY. E-mail address : eevrenkara@hotmail.com