Spacetime mappings of the Brown–York quasilocal energy Jeremy Côté, Marianne Lapierre-Léonard and Valerio Faraoni Eur. Phys. J. C, 79 8 (2019) 678 Published online: 13 August 2019 DOI: 10.1140/epjc/s10052-019-7205-6