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2. Families of surfaces: height functions, Gauss maps and duals;Bruce,1995
3. Thermodynamics and an Introduction to Thermostatistics;Callen,1985
4. The Principles of Chemical Equilibrium;Denbigh,1981
5. The Wigner caustic on shell and singularities of odd functions;Domitrz;J. Geom. Phys.,2013