@article{Akopyan2017WaistOB,
title={Waist of balls in hyperbolic and spherical spaces},
author={A. Akopyan and R. Karasev},
journal={arXiv: Metric Geometry},
year={2017}
}

In this paper we find a tight estimate for Gromov's waist of the balls in spaces of constant curvature, deduce the estimates for the balls in Riemannian manifolds with upper bounds on the curvature ($\mathrm{CAT}(\kappa)$-spaces), and establish similar result for normed spaces.