| Digest Vol. 20, No. 01 | Jan 31 | 2013 |
| Digest Vol. 20, No. 02 | Feb 28 | 2013 |
| Digest Vol. 20, No. 03 | Mar 31 | 2013 |
| Digest Vol. 20, No. 04 | May 01 | 2013 |
| Digest Vol. 20, No. 05 | May 30 | 2013 |
| Digest Vol. 20, No. 06 | Aug 02 | 2013 |
| Digest Vol. 20, No. 07 | Sep 01 | 2013 |
| Digest Vol. 20, No. 08 | Sep 30 | 2013 |
| Digest Vol. 20, No. 09 | Oct 31 | 2013 |
| Digest Vol. 20, No. 10 | Dec 01 | 2013 |