Add new video by Pavel Vesely
diff --git a/docs/Background/Presentations.md b/docs/Background/Presentations.md
index f7d1bc5..6a1d9a7 100644
--- a/docs/Background/Presentations.md
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@@ -22,6 +22,14 @@
## Presentations
+| Title | Relative Error Streaming Quantiles |
+| --------- | ---------------------------------------------------------------------------- |
+| Synopsis | Explanation of the theory and operation of this new sketch. |
+| Presenter | [Pavel Vesely](https://warwick.ac.uk/fac/sci/dcs/people/pavel_vesely/) from [CSI Charles Univ, Prague](https://www.mff.cuni.cz/en/iuuk) |
+| Date | July 16, 2020 |
+| Conference| [WOLA 2020](https://www.mit.edu/~mahabadi/workshops/WOLA-2020.html) |
+| Link | [YouTube](https://www.youtube.com/watch?v=bstWkj0EdVQ) |
+
| Title | A Production Quality Sketching Library for the Analysis of Big Data |
| --------- | ---------------------------------------------------------------------------- |
