| Digest Vol. 28, No. 01 | Jan 28 | 2021 |
| Digest Vol. 28, No. 02 | Mar 31 | 2021 |
| Digest Vol. 28, No. 03 | Apr 22 | 2021 |
| Digest Vol. 28, No. 04 | May 20 | 2021 |
| Digest Vol. 28, No. 05 | Jun 17 | 2021 |
| Digest Vol. 28, No. 06 | Jul 05 | 2021 |
| Digest Vol. 28, No. 08 | Sep 14 | 2021 |
| Digest Vol. 28, No. 09 | Oct 03 | 2021 |
| Digest Vol. 28, No. 10 | Oct 03 | 2021 |
| Digest Vol. 28, No. 11 | Oct 17 | 2021 |
| Digest Vol. 28, No. 12 | Nov 17 | 2021 |
| Digest Vol. 28, No. 13 | Dec 19 | 2021 |