Rashid Shakir, Q. (2014). Minimal and Maximal Beta Open Sets. Alustath, 17(1), 160-166.
Qays Rashid Shakir. "Minimal and Maximal Beta Open Sets". Alustath, 17, 1, 2014, 160-166.
Rashid Shakir, Q. (2014). 'Minimal and Maximal Beta Open Sets', Alustath, 17(1), pp. 160-166.
Rashid Shakir, Q. Minimal and Maximal Beta Open Sets. Alustath, 2014; 17(1): 160-166.


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