%0 Journal Article
%A Prashant Kocherlakota
%A Luciano Rezzolla
%A Event Horizon Telescope Collaboration
%B Physical Review D
%D 2021
%G eng
%N 10
%P 40-47
%T Constraints on non-Einsteinian black-hole charges with the 2019 EHT observations of M87
%U https://journals.aps.org/prd/abstract/10.1103/PhysRevD.103.104047
%V 103