An Eigenvalue Problem for the Stieltjes Mean Sigma-Integral Related to Gronwall's Inequality
Jeffrey R. Kroll, Keith P. Smith · Proceedings of the American Mathematical Society · 1972
Jeffrey R. Kroll, Keith P. Smith, An Eigenvalue Problem for the Stieltjes Mean Sigma-Integral Related to Gronwall's Inequality, Proceedings of the American Mathematical Society, Vol. 33, No. 2 (Jun., 1972), pp. 384-388