Continuous dependence on modeling for some well-posed perturbations of the backward heat equation. Ames, K.A.; Payne, L.E. — 1999 Journal of Inequalities and Applications [electronic only]
On a mean value theorem, and its converse, for the displacements in the theory of elasticity Diaz, J.B.; Payne, L.E. — 1958 Portugaliae mathematica