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Number of items: 2.
2014
Baekler, Peter, Favaro, Alberto, Itin, Yakov and Hehl, Friedrich W. 
ORCID: 0000-0003-2503-4744
(2014).
The Kummer tensor density in electrodynamics and in gravity.
Ann. Phys., 349.
S. 297 - 325.
SAN DIEGO:
ACADEMIC PRESS INC ELSEVIER SCIENCE.
ISSN 1096-035X
2011
Baekler, Peter and Hehl, Friedrich W. ORCID: 0000-0003-2503-4744
(2011).
Beyond Einstein-Cartan gravity: quadratic torsion and curvature invariants with even and odd parity including all boundary terms.
Class. Quantum Gravity, 28 (21).
BRISTOL:
IOP PUBLISHING LTD.
ISSN 1361-6382