GCTP license

[Ivan Shmakov <ivan@theory.asu.ru>]

	Does anyone know what license GCTP [1, 2] is available under?
	It seems that I'm not the first to wonder on this (e. g., [3].)

	Is it in public domain?

	I need GCTP in order to prepare Debian packages for HDF-EOS,
	HDF-EOS 5 and SDP Toolkit [4], which are required by, e. g.,
	SeaDAS [5].

[1] http://gcmd.nasa.gov/records/USGS-GCTP.html
[2] ftp://edcftp.cr.usgs.gov/pub/software/gctpc/
[3] http://opensourcegis.org/
[4] http://newsroom.gsfc.nasa.gov/sdptoolkit/toolkit.html
[5] http://oceancolor.gsfc.nasa.gov/seadas/