Kandil K, Tantawy OAE, El-Sheikh SA, Hazza SA. On Pairwise ?-Open Soft Sets and Pairwise Locally Closed Soft Sets. ASRJETS-Journal. 2017;28(1):225-247. Accessed October 29, 2025. https://asrjetsjournal.org/American_Scientific_Journal/article/view/2676