1. Gradient Flows in Metric Spaces and in the Space of Probability Measures;Ambrosio,2005
2. Convex Analysis and Optimization in Hadamard Spaces;Bačák,2014
3. Riemannian geometry and matrix geometric means;Bhatia;Linear Algebra Appl.,2006
4. Monotonicity of the matrix geometric mean;Bhatia;Math. Ann.,2012
5. Measure Theory Vol II;Bogachev,2007