Prof. Dr. Friedrich W. Hehl (i.R.)
Institut für Theoretische Physik
University of Missouri-Columbia
Dept. of Physics & Astronomy
Columbia, MO 65211, USA
Two parts of the new book of
Friedrich W. Hehl & Yuri N. Obukhov: Foundations of Classical Electrodynamics: Charge, Flux, and Metric. Birkhauser, Boston, MA (Aug. 2003), US $79.95 (at amazon.com)you can inspect here as ps- or pdf-file.
A new book March 2013:
M Blagojević and F W Hehl, editors,
GAUGE THEORIES OF GRAVITATION.
A Reader with Commentaries.
Foreword by: T W B Kibble, FRS
Four lectures on Poincaré gauge field theory (Erice 1979)
The Kummer tensor density in electrodynamics and in gravity (July 2014)
I gave 12 Lectures on “Gauge Theories of Gravitation”
in Hsin-chu, Taiwan, ROC, on the invitation of the
Cosmology and Particle Astrophysics Focus Group
National Center for Theoretical Sciences
There are corresponding videos on Youtube: