| 2022-12-30 | Chengsong | comments till chap4 | file | diff | annotate |
| 2022-11-12 | Chengsong | all comments incorporated!!+related work | file | diff | annotate |
| 2022-11-11 | Chengsong | incorporated more comments, bib | file | diff | annotate |
| 2022-08-26 | Chengsong | chap4 more | file | diff | annotate |
| 2022-08-22 | Chengsong | chap3 done | file | diff | annotate |
| 2022-08-20 | Chengsong | chap3 almost done | file | diff | annotate |
| 2022-08-17 | Chengsong | halfway chap3 | file | diff | annotate |
| 2022-08-17 | Chengsong | more chap3 | file | diff | annotate |