@article{HeinickeBaeklerHehl2005, author = {Heinicke, Christian and Baekler, Peter and Hehl, Friedrich W.}, title = {Einstein-aether theory, violation of Lorentz invariance, and metric-affine gravity}, journal = {Physical Review D}, volume = {72}, number = {2}, doi = {10.1103/physrevd.72.025012}, year = {2005}, }