Search results for: Sadek Gala
Acta Mathematica Scientia > 2011 > 31 > 2 > 591-600
Acta Mathematica Scientia > 2010 > 30 > 5 > 1413-1418
Acta Mathematica Scientia > 2011 > 31 > 2 > 591-600
Acta Mathematica Scientia > 2010 > 30 > 5 > 1413-1418