Dani, S. G. (ed.) et al., Geometric and ergodic aspects of group actions. Selected papers presented at the workshop on geometric and ergodic aspects of group actions, Mumbai, India, April 20–24, 2015 and at the follow-up meeting on distinguished lectures in dynamics, Mumbai, India, April 10–14, 2017. Singapore: Springer. Infosys Sci. Found. Ser., 1-20 (2019).