Bethany College, Lindsboro, KS, USA;
delphenichd(at)bethanylb.edu
Received 27 April 2005, revised 14 July 2005, accepted 14 July 2005 by F. W. Hehl
Soete Laboratory - Department of Mechanical Construction and Production, Ghent
University, Sint Pietersnieuwstraat 41, 9000 Ghent, Belgium;
nicof.declercq(at)ugent.be
Received 10 March 2005, revised 4 July 2005, accepted 15 July 2005 by U. Eckern
Instituto de Fisica, Universidade de Brasilia, Caixa Postal 04455, 70919-970
Brasília - DF, Brasil;
wadih(at)fis.unb.br
Received 20 April 2005, revised 25 July 2005, accepted 25 July 2005 by F. W. Hehl
Racah Institute of Physics, Hebrew University, 91904 Jerusalem, Israel;
mark_perelman(at)mail.ru
Received 27 December 2004, revised 9 August 2005,
accepted 10 August 2005 by F. W. Hehl
Fachbereich Physik, Experimentalphysik, Universität Duisburg-Essen,
47048 Duisburg, Germany; mario(at)agfarle.uni-duisburg.de
Received 9 May 2005, accepted 29 August 2005 by U. Eckern
University of Missouri, Department of Physics and Astronomy, Columbia,
MO 65211, USA; MashhoonB(at)missouri.edu
Received 15 Sep 2005, accepted 19 Sep 2005 by F. W. Hehl
Instituto de Fisica, Universidade de Sao Paulo,
Caixa Postal 66318-CEP, 05315-970 Sao Paulo, S.P., Brazil;
bagrov(at)phys.tsu.ru, baldiott(at)fma.if.usp.br
Received 24 Mar 2005, accepted 19 Oct 2005 by U. Eckern