2 citations to https://www.mathnet.ru/rus/tm134

1. Smarzewski R., Rutka P., “Inequalities of Chernoff type for finite and infinite sequences of classical orthogonal polynomials”, Proc. Amer. Math. Soc., 138:4 (2010), 1305–1315            
2. Stepanov V.D., “An extremal property of Jacobi polynomials in two-sided Chernoff-type inequalities for higher order derivatives”, Proc. Amer. Math. Soc., 136:5 (2008), 1589–1597