Interactive SETL by Gary Levin <[email protected]>.

Current version: 3.0.

Binaries and source for MS-DOS, Macintosh, Unix, VAX/VMS.

[Clarkson U. "An Introduction to ISETL Version 1.9", G.M. Levin, Dept MCS, Clarkson U].

["Learning discrete mathematics with ISETL", Nancy Baxter. Ed. Gary Levin Dubinsky. Springer-Verlag, c.1989.]

(Apr 1994)