vid L. Detlefs, <a href="http://www.usenix.org/publications/library/proceedings/c++94/full_papers/ellis.a">
				Safe, Efficient Garbage Collection for C++</a>, Usenix Proceedings,
			February, 1994. This paper includes an extensive discussion of weak pointers
			and an extensive bibliography.</p>
		<hr>
		<p>$Date: 2012-11-21 07:38:06 -0800 (Wed, 21 Nov 2012) $</p>
		<p><small>Copyright 1999 Greg Colvin and Beman Dawes. Copyright 2002 Darin Adler.
			Distributed under the Boost Software License, Version 1.0