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From: "Yair Altman" <altmanyDEL@gmailDEL.comDEL>
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Subject: Re: Call by reference / references
Date: Sat, 9 Jun 2012 17:54:08 +0000 (UTC)
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The following article may alleviate some of your worries:

http://undocumentedmatlab.com/blog/internal-matlab-memory-optimizations/

Yair Altman 
http://UndocumentedMatlab.com