Bin Shahna, A. (2011). Regular preopen L-sets and extremally predisconnected spaces. test, 35(1), 20-24. doi: 10.21608/djs.2011.149672
Abdulla Salem Bin Shahna. "Regular preopen L-sets and extremally predisconnected spaces". test, 35, 1, 2011, 20-24. doi: 10.21608/djs.2011.149672
Bin Shahna, A. (2011). 'Regular preopen L-sets and extremally predisconnected spaces', test, 35(1), pp. 20-24. doi: 10.21608/djs.2011.149672
Bin Shahna, A. Regular preopen L-sets and extremally predisconnected spaces. test, 2011; 35(1): 20-24. doi: 10.21608/djs.2011.149672