By Wolfram Otto...[et.al] By Wolfram Otto...[et.al by Cristian Bonetto...[et.al.] by Paul Smitz...[et.al] by Ulrich Loock...[et.al.] by Cristian Bonetto...[et.al. by Keith R.A....[et.al.] By Silvio Artero...[et.al.] Wolfram Koeppe ...[et al.] by David Else...[et.al]