I haven't been able to locate Jerome Quelin's octo-lingual code but I did find a quatro-lingual (perl, c, brain@#!*, Befunge) tutoral by him (offsite)

I also found another node by AlexL that prints hello world in four languages (perl, C, Tcl, and REBOL) and an octo-lingual code here(offsite) by Kevin Bungard, Peter Lisle, and Chris Tham.