Books by Tudor S. Ratiu
Convexity of Singular Affine S
Convexity of Singular Affine Structures and Toric-Focus Integrable Hamiltonian Systems
Introduction To Mechanics And Symmetry A Basic Exposition Of Classical Mechanical Systems
Breadth of Symplectic and Pois
Breadth of Symplectic and Poisson Geometry
Einführung in die Mechanik und Symmetrie
Introduction to Mechanics and Symmetry