I was curious where Ephemerons came from, and in case others are too, 
here's a reference:

Ephemerons: a new finalization mechanism; Barry Hayes; OOPSLA 1997,
pages 176-183

Joshua


On Sat, Aug 09, 2003 at 01:13:40AM +0200, Andreas Raab wrote:
> Hi Guys,
> 
> Finally hacked together an implementation of Ephemerons for Squeak. 
> <etc>