Dougall, Rhiannon and Sharp, Richard (2021) Anosov flows, growth rates on covers and group extensions of subshifts. Inventiones Mathematicae, 223 . pp. 445-483. doi:10.1007/s00222-020-00994-3 ISSN 0020-9910.

Dougall, Rhiannon (2017) Critical exponents, the spectrum of group extended transfer operators and Kazhdan distance. PhD thesis, University of Warwick.

Dougall, Rhiannon and Sharp, Richard (2016) Amenability, critical exponents of subgroups and growth of closed geodesics. Mathematische Annalen, 365 (3-4). pp. 1359-1377. doi:10.1007/s00208-015-1338-1 ISSN 0025-5831.