A theorem on Hermitian solutions for related matrix differential and integral equations Sternberg, Robert L. — 1953 Portugaliae mathematica
Applications of the theory of systems of differential equations to vibrating beams Sternberg, Robert L. — 1954 Portugaliae mathematica
Backward recurrence relations for Bennett functions Sternberg, Robert L.; Sternberg, Helen M. — 1976 Portugaliae mathematica