Donald Knuth credits Pierre-Arnoul de Marneffe's idea of "Holon Programming" as the main influence on Literate Programming. See page 13 of "Literate Programming", Knuth's paper introducing the concept. Knuth calls de Marneffe's work "pioneering" and says that it "has not received the attention it deserves".
Knuth cites the following:
P.A. de Marneffe, Holon Programming. Univ. de Liege, Service D'Informatique (December, 1973).
P.A. de Marneffe and D. Ribbens, Holon Programming, in A. Günther et al. (eds.), International Computing Symposium 1973, Amsterdam, North-Holland (1974).
Also cited as:
Proceedings of the International Computing Symposium 1973, Davos, Switzerland, 4–7 September 1973. Edited by Alfred Gunther, Bernard Levrat and H. Lipps
The Wikipedia article Literate Programming refers to the first source, but adds that it was "Report PMAR 73–23".
Unfortunately these sources are nowhere to be found. I don't mean that there's just no free PDF online; I mean that if you type
"holon programming" PMAR 73-23 into Google, you get fewer than 100 results, many of which are suppressed because Google identified them as essentially duplicates of other pages. None of the results are helpful. If you search for
PMAR 73-23 alone, then you get many more results, but they are all irrelevant. You might be asking "What if Wikipedia's extra information is wrong?" Sadly there's still no luck searching for the titles or for the publications or for both.
Although it would be great to get ahold of these documents, I don't really mind if I can't. What I really want to know is simply this:
What exactly is Holon Programming?
I know it has something to do with the concept of Holon (outside of programming), but that isn't very useful. Was there an actual implementation of de Marneffe's ideas? If so, then is there any information about it?