The following Unicode-related documents record the purpose and process of defining specific characters in the Small Kana Extension block:
| Version | Final code points| Count | L2 ID | WG2 ID | Document | |
|---|
| 12.0 | U+1B150..1B152, 1B164..1B167 | 7 | [https://www.unicode.org/L2/L2016/16334-kana-small.pdf L2/16-334]}} | title=Hiragana and Katakana (Small Letters)|date=2016-11-04|first=Cheon Hyeong|last=Sim}} |
| [https://www.unicode.org/L2/L2016/16354-kana-small-ltr.pdf L2/16-354]}} | title=Proposal to add Kana small letters|date=2016-11-07|first=Ryusei|last=Yamaguchi}} |
| [https://www.unicode.org/L2/L2016/16358r-small-kana-fdbk.pdf L2/16-358R]}} | [https://www.unicode.org/wg2/docs/n4803-small-kana-fdbk.pdf N4803] | title=L2/16-334 & L2/16-354 Feedback (small kana)|date=2016-11-22|first=Ken|last=Lunde|authorlink=Ken Lunde}} |
| [https://www.unicode.org/L2/L2016/16325.htm L2/16-325]}} | title=UTC #149 Minutes|date=2016-11-18|first=Lisa|last=Moore|section=C.14 Kana}} |
| [https://www.unicode.org/L2/L2017/17353-wg2-consent-docket.pdf L2/17-353]}} | title=WG2 Consent Docket|date=2017-10-02|first1=Deborah|last1=Anderson|first2=Ken|last2=Whistler|section=N.1. Small Kana Extension code block and code point changes}} |
| [https://www.unicode.org/L2/L2017/17362.htm L2/17-362]}} | title=UTC #153 Minutes|date=2018-02-02|first=Lisa|last=Moore|section=Consensus 153-C13}} |
1. ^{{Cite web|url=https://www.unicode.org|title=Unicode character database|work=The Unicode Standard|accessdate=2019-03-05}}
2. ^{{Cite web|url=https://www.unicode.org/versions/enumeratedversions.html|title=Enumerated Versions of The Unicode Standard|work=The Unicode Standard|accessdate=2019-03-05}}
3. ^{{cite book | title = The Unicode Standard, Version 12.0 | chapter = Chapter 18.4: 18.4 Hiragana and Katakana | publisher = Unicode, Inc | date = June 2018 | location = Mountain View, CA | url = https://www.unicode.org/versions/Unicode12.0.0/ch18.pdf | isbn = 978-1-936213-22-1 }}
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