Mark Calabretta <mcalabre@atnf.csiro.au>
	SWarp makes extensive use of his nice WCS library

Nicolas Devillard <ndevilla@free.fr>
	Enlightening discussions about interpolation engines,
	fast medians and pthread portability issues.
	See http://ndevilla.free.fr/

Ville Laurikari	<vl@iki.fi>
	For his VL_PROG_CC_WARNINGS (modified to ACX_PROG_CC_OPTIM)

Steven G. Johnson <stevenj@alum.mit.edu>	
	For his acx_pthread.m4

John Blakeslee <jpb@adcam.pha.jhu.edu>
Mireille Dantel-Fort <mireille.dantel@obspm.fr>
Erik Deul <deul@strw.leidenuniv.nl>
Laurent Domisse <domisse@iap.fr>
Dafydd Wyn Evans <dwe@ast.cam.ac.uk>
Norman Grogin <nagrogin@stsci.edu>
Stephen Gwyn <stephen.gwyn@astrsp-mrs.fr>
Vincent Lebrun <Vincent.LeBrun@astrsp-mrs.fr>
Frederic Magnard <magnard@iap.fr>
Henry-Joy McCracken <hjmcc@iap.fr>
Mario Radovich <radovich@na.astro.it>
Roeland Rengelink <rengelin@strw.LeidenUniv.nl>
Chris Sabbey <sabbey@ast.cam.ac.uk>
Roy Williams <roy@cacr.caltech.edu>
	Help in discovering bugs or bringing suggestions
