diff --git a/guides/users/README.org b/guides/users/README.org
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@@ -18,9 +18,11 @@
 * TL;DR 
 <<sasa>>
 SASA is a *Self-stabilizing Algorithms SimulAtor*, based on the
-so-called *Atomic State model* (ASM) introduced by _Dijkstra_ in its seminal article
+so-called *Atomic State model* (ASM)[fn:asm] introduced by _Dijkstra_ in its seminal article
 on [[http://www.cs.utexas.edu/~EWD/ewd04xx/EWD426.PDF][Self-stabilizing distributed algorithms]].
 
+[fn:asm] This  model is also  sometimes named "locally  shared memory model with composite atomicity"
+
 Basically, one needs to provide:
 1.  a topology,  made of  nodes  and transitions  (via a [[https://en.wikipedia.org/wiki/DOT_(graph_description_language)][dot]] file)
 2. the algorithms attached to nodes (via [[https://ocaml.org/][=ocaml=]] programs)
@@ -41,11 +43,11 @@ SASA source code: https://gricad-gitlab.univ-grenoble-alpes.fr/verimag/synchrone
 
 Some Tutorials: https://verimag.gricad-pages.univ-grenoble-alpes.fr/vtt/tags/sasa/
 
+TAP article pre-print : [[https://hal.archives-ouvertes.fr/hal-02521149][Karine Altisen, Stéphane Devismes, Erwan Jahier. SASA: a SimulAtor of Self-stabilizing Algorithms. 14th International Conference on Tests and Proofs, Jun 2020, Bergen, Norway. hal-02521149]]
+
 #+attr_html: :width 300px
 [[http://www-verimag.imag.fr/DIST-TOOLS/SYNCHRONE/sasa/poster.pdf][file:poster.png]]
 
-
-
 * Topology
 <<dot>>
 <<topology>>