Timeline for Reference request: flat surfaces
Current License: CC BY-SA 3.0
2 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 3, 2018 at 16:28 | vote | accept | Xin Nie | ||
| Mar 13, 2015 at 21:29 | history | answered | Igor Rivin | CC BY-SA 3.0 |