Uniqueness in an inverse problem for an elasticity system. Bukhgeĭm, A.L., Dyatlov, G.V., Kardakov, V.B., Tantserev, E.V. (2004) Sibirskij Matematicheskij Zhurnal
Uniqueness of the solution of a tangential derivative problem for an infinite system of nonlinear integro-differential equations of parabolic type Andrzej Borzymowski, Jacek Urbanowicz (1983) Annales Polonici Mathematici