TY - JOUR A1 - Baekler, Peter A1 - Hehl, Friedrich W. T1 - Beyond Einstein–Cartan gravity: quadratic torsion and curvature invariants with even and odd parity including all boundary terms T2 - Classical and Quantum Gravity Y1 - 2011 UR - https://opus4.kobv.de/opus4-hs-duesseldorf/frontdoor/index/index/docId/2737 VL - 28 IS - 21 PB - IOP ER -