@article{BaeklerHehl2011, author = {Baekler, Peter and Hehl, Friedrich W.}, title = {Beyond Einstein-Cartan gravity: quadratic torsion and curvature invariants with even and odd parity including all boundary terms}, journal = {Classical and Quantum Gravity}, volume = {28}, number = {21}, doi = {10.1088/0264-9381/28/21/215017}, year = {2011}, }