Copyleft for scientific papers

I want to formulate a suitable "copyleft" for scientific papers, similar to the GNU project copyleft for software. (The GNU copyleft allows anyone to copy the program, but they cannot restrict further distribution.) Unfortunately, the GNU copyleft is now about 5 pages long, and I'd like something that would fit in a paragraph at the bottom of page 1. (Also the GNU version has stuff particular to computer programming, warrantee disclaimer, etc.)

My first try is

(c) copyright 1994 Richard Schroeppel

This paper, or any portion, may be freely copied, provided
(1) this entire copyright notice is included, and
(2) no further copyright may be asserted over the copy,

    including collection copyright, and
(3) any copyright notice on accompanying or surrounding material

    must make it clear that this paper is excluded from the     other copyright notice, and
(4) the phrase "the original version of this article may be

    obtained from Scientific Bulgarian magazine, July 1994"     is included.

This is already too long, and I'm not sure I've covered all the bases. Suggestions welcome.

Rich Schroeppel rcs[_at_]cs.arizona.edu Received on Fri Mar 04 1994 - 00:10:21 GMT