1. Sur la représentation des polynomes positifs;Bernstein,1952
2. Markov-type inequalities for trigonometric polynomials of special type;Erdélyi;Acta Math. Hungar.,1988
3. Markov and Bernstein type inequalities for certain classes of constrained trigonometric polynomials on an interval shorter than the period;Erdélyi;Studia Sci. Math. Hungar.,1990
4. On polynomials with positive coefficients;Erdélyi;J. Approx. Theory,1988
5. On trigonometric polynomials with positive coefficients;Erdélyi;Studia Sci. Math. Hungar.,1989