Free and hyperbolic groups (Princeton) 2017
Free and hyperbolic groups II , 2017
Free and hyperbolic groups III, 2017
Free and hyperbolic groups IV, 2017
Universal theory of random groups 2021
Elementary classification questions for algebras and group rings, Paris 2015
Non A-homogeneity in free groups
Group actions on R-trees and Lambda-trees, Varanasi, 2019
Invited Talk at the International Congress of Mathamaticians in Seoul, South Korea 2014
Click here to view slides of the talk.