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From: AdaMagica <christoph.grein@eurocopter.com>
Newsgroups: comp.lang.ada
Subject: Re: Extending a type and Finalization
Date: Sun, 14 Jun 2009 23:30:20 -0700 (PDT)
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I published a paper in Ada Letters, Volume XIX, Number 4, December
1999, which discusses adding finalization to uncontrolled types in
detail.

You can find it here http://www.christ-usch-grein.homepage.t-online.de/Ada/Finalization.html
(with some minor corrections and updates).