diff --git a/README.md b/README.md
index f1b68e1c37128e90ba2d8beaa10b41c3b3e9c362..0aad71997193a2dfe124d0b349a896a47a65d856 100644
--- a/README.md
+++ b/README.md
@@ -51,9 +51,10 @@ This repository contains the following case studies:
- Proof of refinement for a pair of fine-grained/coarse-grained
concurrent stack implementations
* [spanning-tree](theories/spanning_tree): Proof of a concurrent spanning tree
- algorithm.
+ algorithm by Amin Timany.
* [concurrent-stacks](theories/concurrent_stacks): Proof of an implementation of
- concurrent stacks with helping, as described in the [report](http://iris-project.org/pdfs/2017-case-study-concurrent-stacks-with-helping.pdf).
+ concurrent stacks with helping by Daniel Gratzer et. al., as described in the
+ [report](http://iris-project.org/pdfs/2017-case-study-concurrent-stacks-with-helping.pdf).
* [lecture-notes](theories/lecture_notes): Coq examples for the
[Iris lecture notes](http://iris-project.org/tutorial-material.html).