R. Szász
About a differential inequality
Acta Universitatis Sapientiae, Mathematica, 1, 1 (2009) 87−93     Full text in PDF
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R. Szász
Improvement of some results concerning starlikeness and convexity
Acta Universitatis Sapientiae, Mathematica, 4, 2 (2012) 199−205     Full text in PDF
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R. Szász, P. Kupán
About a condition for starlikeness
Acta Universitatis Sapientiae, Mathematica, 5, 1 (2013) 83−92     Full text in PDF
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