diff --git a/final/todo.md b/final/todo.md
index 86a25e1..d706616 100644
--- a/final/todo.md
+++ b/final/todo.md
@@ -4,9 +4,10 @@
 * [x] Test cell in the _middle_.
 * [x] Walk through the consequences of the read/write block being in the middle.
 * [x] Figure out what to do with flopped write block.
-* [ ] Test data close to write block (it pulls up past clock low!)
+* [x] Test data close to write block (it pulls up past clock low!)
 * [ ] Drive wires to zero?
 * [ ] Add missing well connection in layout
 * [ ] Make sure width isn't too horrible
 * [ ] Model additional delay for read read/write block select?
 * [ ] Model worst case of decoder
+* [ ] Cite [this](https://ieeexplore.ieee.org/document/210039)
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