Conjugate Loci of Pseudo-Riemannian 2-Step Nilpotent Lie Groups with Nondegenerate Center
The Problem of Prescribed Critical Functions
A Class of Surfaces with Flat Blaschke Metric and Their Characterization
Integrability of Analytic Almost Complex Structures on Banach Manifolds
Energy and Foliations on Riemann Surfaces
The Rough Laplacian and Harmonicity of Hopf Vector Fields