Böhm, Arno, 1936-2012-09-042017-05-112012-09-042017-05-112008-08http://hdl.handle.net/2152/17750textelectronicengCopyright is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.Causality (Physics)Space and timeDispersion relations