On a conjecture of Clark and Ismail. - Horst Alzer; Christian Berg; Stamatis Koumandos (J. Approx. Theory, 2005)

On a Class of Integrals Involving a Bessel Function Times Gegenbauer Polynomials. - Stamatis Koumandos (Int. J. Math. Math. Sci., 2007)

On a conjecture for trigonometric sums and starlike functions. - Stamatis Koumandos; Stephan Ruscheweyh (J. Approx. Theory, 2007)

On a conjectured inequality of Gautschi and Leopardi for Jacobi polynomials. - Stamatis Koumandos (Numer. Algorithms, 2007)

Monotonicity of some functions involving the gamma and psi functions. - Stamatis Koumandos (Math. Comput., 2008)

Series and product representations for some mathematical constants. - Horst Alzer; Stamatis Koumandos (Period. Math. Hung., 2009)

On a conjecture for trigonometric sums and starlike functions, II. - Stamatis Koumandos; Martin Lamprecht (J. Approx. Theory, 2010)

Some completely monotonic functions of positive order. - Stamatis Koumandos; Martin Lamprecht (Math. Comput., 2010)

Complete monotonicity and related properties of some special functions. - Stamatis Koumandos; Martin Lamprecht (Math. Comput., 2013)

On the log-concavity of the fractional integral of the sine function. - Stamatis Koumandos (J. Approx. Theory, 2016)