[1] M. Berger and B. Gostiaux: 
Differential Geometry: Manifolds, Curves, and Surfaces. Graduate Texts in Mathematics 115, Springer, New York, 1988. 
MR 0917479[2] M. Brokate and P. Krejčí: Wellposedness of kinematic hardening models in elastoplasticity. Christian-Albrechts-Universität Kiel, Berichtsreihe des Mathematischen Seminars Kiel, Bericht 96–4, Februar 1996.
[3] M. Brokate and J. Sprekels: 
Hysteresis and Phase Transitions. Applied Mathematical Sciences 121, Springer, New York, 1996. 
MR 1411908[4] W. Desch and J. Turi: The stop operator related to a convex polyhedron. Manuscript.
[5] J. Dieudonné: 
Foundations of Modern Analysis. Academic Press, New York, London, 1969. 
MR 0349288[6] M. A. Krasnosel’skii and A. V. Pokrovskii: 
Systems with Hysteresis. Springer, Berlin, 1989. 
MR 0987431[8] P. Krejčí: 
Hysteresis, Convexity, and Dissipation in Hyperbolic Equations. Gakkotosho, Tokyo, 1996. 
MR 2466538[9] P. Krejčí: Evolution variational inequalities and multidimensional hysteresis operators. Manuscript.
[10] P. Krejčíand V. Lovicar: 
Continuity of hysteresis operators in Sobolev spaces. Appl. Math. 35 (1990), 60–66. 
MR 1039411