Conservation Laws and Boundedness for Linearised Einstein–Maxwell Equations on the Reissner-Nordström Black Hole, (with Sam C. Collingbourne, and Elena Giorgi) arXiv version.
Instability of gravitational and electromagnetic perturbations of extremal Reissner-Nordström spacetime
Annals of PDE, Vol: 9, 22 (2023); here is the arXiv version.