TY  - RPRT
TI  - Lorentz symmetry in ghost-free massive gravity
AU  - Kostelecký, V. Alan
AU  - Potting, Robertus
PY  - 2021
DO  - 10.1103/physrevd.104.104046
UR  - https://www.osti.gov/biblio/1843789
ID  - 1843789
ER  -