| Mon, 06 Feb 2012 12:08:35 +0000 | urbanc | paper updatated | file | diff | annotate |
| Thu, 02 Feb 2012 13:58:16 +0000 | urbanc | slight tuning | file | diff | annotate |
| Wed, 01 Feb 2012 12:00:37 +0000 | urbanc | slightly more on text | file | diff | annotate |
| Mon, 30 Jan 2012 08:55:27 +0000 | urbanc | more text | file | diff | annotate |
| Mon, 30 Jan 2012 08:45:56 +0000 | urbanc | more text | file | diff | annotate |
| Mon, 30 Jan 2012 06:46:47 +0000 | urbanc | added two paragraphs to the introduction | file | diff | annotate |