diff --git a/CREDIT.md b/CREDIT.md
index 6edbe5b69a9304b123c3e175e49b6ce95d27ff42..dfd9aa608b6e2deaffa29524ca38057fcb4aa21e 100644
--- a/CREDIT.md
+++ b/CREDIT.md
@@ -2,10 +2,10 @@ The following people have contrinuted to the Pactole library. See also
 the LICENSE file.
 
 Cédric Auger (2013)
-Thibaut Balabonski(2016-2017)
-Sebastien Bouchard(2021-)
+Thibaut Balabonski (2016-2017)
+Sebastien Bouchard (2021-)
 Pierre Courtieu (2013-)
 Robin Pelle (2016-2020)
-Lionel Rieg (2019-)
+Lionel Rieg (2014-)
 Xavier Urbain (2013-)
 
diff --git a/README.md b/README.md
index 0b2dc291d766b0c890439a36830a2cb4b55dca36..9f9cb4163c2c871fbc2d098b43975542c673ec9e 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ case studies. The structure of the repository is describe below.
 
 # Support
 
-It was financially supported by the following propject:
+It was financially supported by the following projects:
 
 - [The Pactole project](https://pactole.liris.cnrs.fr/) started as
   Digiteo Project #2009-38HD.
@@ -36,16 +36,15 @@ It was financially supported by the following propject:
 The directory `CaseStudies` contains the following the following case
 studies. Each case study (say `casestudy.v`) has a companion file
 called `casestudy_Assuptions.v` whose only purpose is to call `Print
-Assumption` on the main theorem of the case study. The reason why this
-command is not included in the case study itself is for allowing fast
-compilation of the case study.
+Assumption` on the main theorem(s) of the case study. The reason why
+this command is not included in the case study itself is for allowing
+fast compilation of the case study.
 
 Here is a list of the current case studies:
 
 - [Convergence/](Casestudy/Convergence):
   - [Algorithm_noB.v](CaseStudies/Convergence/Algorithm_noB.v):
     Convergence without byzantine robots on the euclidean plane.
-    
   - [Impossibility_2G_1B.v](CaseStudies/Convergence/Impossibility_2G_1B.v):
     Impossibility of convergence on the line when 1/3 of robots are
     byzantine. Auger, Bouzid, Courtieu, Tixeuil, Urbain. Certified
@@ -56,40 +55,47 @@ Here is a list of the current case studies:
   various models
   - [Impossibility.v](CaseStudies/Gathering/Impossibility.v):
     Impossibility of gathering in SSYNC.
-  - [Definitions.v](CaseStudies/Gathering/Definitions.v): Common
-    definitions about the gathering problem.
+  - [Definitions.v](CaseStudies/Gathering/Definitions.v):
+    Common definitions about the gathering problem.
   - [WithMultiplicity.v](CaseStudies/Gathering/WithMultiplicity.v):
-    Common definition on gathering when robot enjoy strong
+    Common definition on gathering when robots enjoy strong
     multiplicity detection.
   - [InR/](CaseStudies/Gathering/InR) case studies for the gathering
-    on the enclidean line
+    on the Euclidean line
     - [Impossibility.v](CaseStudies/Gathering/InR/Impossibility.v):
       Impossibility of gathering on the line in SSYNC.
+      Courtieu, Rieg, Tixeuil, Urbain. Impossibility of gathering, a certification. IPL 115.
     - [Algorithm.v](CaseStudies/Gathering/InR/Algorithm.v): Gathering
       one the line in SSYNC with strong multiplicity detection, from
       non bivalent configurations.
   - [InR2/](CaseStudies/Gathering/InR2) case studies for the gathering
-    on the enclidean plane
+    on the Euclidean plane
     - [Peleg.v](CaseStudies/Gathering/InR2/Peleg.v):
-      Formalization of a protocol for gathering with lights due to Peleg.
+      Gathering in FSYNC and non rigid moves with weak mutliplicity detection, due to Peleg.
+      Cohen, Peleg. Convergence Properties of the Gravitational Algorithm in Asynchronous Robot Systems. SIAM Journal of Computing, 34(6):1516–1528, 2005.
     - [Viglietta.v](CaseStudies/Gathering/InR2/Viglietta.v):
       Formalization of a protocol for gathering with lights due to Viglietta.
+      Viglietta. Rendezvous of two robots with visible bits. ALGOSENSORS 2013.
     - [FSyncFlexNoMultAlgorithm.v](CaseStudies/Gathering/InR2/FSyncFlexNoMultAlgorithm.v):
-      Gathering in FSYNC and non rigid moves with weak mutliplicity detection.
+      Gathering in FSYNC and non rigid moves with no mutliplicity detection.
+      Balabonski, Delga, Rieg, Tixeuil, Urbain. Synchronous Gathering Without Multiplicity Detection: A Certified Algorithm. Theory Comput. Syst. 63(2): 200-218 (2019)
     - [Algorithm.v](CaseStudies/Gathering/InR2/Algorithm.v):
       Gathering in R2 in SSYNC with strong multiplicity detection, from
       non bivalent configurations.
+      Courtieu, Rieg, Tixeuil, Urbain. Certified Universal Gathering in R² for Oblivious Mobile Robots. DISC 2016.
 - [Exploration/](CaseStudies/Exploration): Exploration of a ring with stop
   - [ImpossibilityKDividesN.v](CaseStudies/Exploration/ImpossibilityKDividesN.v):
     Impossibility of exploration of a ring when the number of robots
     divides the number of nodes.
+    Balabonski, Pelle, Rieg, Tixeuil. A Foundational Framework for Certified Impossibility Results with Mobile Robots on Graphs. ICDCN 2018.
   - [ExplorationDefs.v](CaseStudies/Exploration/ExplorationDefs.v):
     Common definitions on exploration.
   - [Tower.v](CaseStudies/Exploration/Tower.v):
-    ???
+    Exploration with stop on a ring requires forming a tower, in particular a single robot is no enough.
 - [LifeLine/](CaseStudies/LifeLine): Life line connection in the 2D Euclidean plane
   - [Algorithm.v](CaseStudies/LifeLineAlgorithm.v):
     Connection maintenance protocol on R2.
+    Balabonski, Courtieu, Pelle, Rieg, Tixeuil, Urbain. Computer Aided Formal Design of Swarm Robotics Algorithms. SSS 2021.
 
 #  Other Related Ressources
 
diff --git a/codemeta.json b/codemeta.json
index ebb365b59cec186adf172fc63bd0612d1830ab19..ecffdeeb58f376d52295c3c9bdd50460e0af6dfd 100644
--- a/codemeta.json
+++ b/codemeta.json
@@ -53,6 +53,16 @@
                 "name": "Université???"
             }
         }
+        {
+            "@type": "Person",
+            "givenName": "Lionel",
+            "familyName": "Rieg",
+            "email": "lionel.rieg@univ-grenoble-alpes.fr",
+            "affiliation": {
+                "@type": "Organization",
+                "name": "Verimag, Grenoble INP -- UGA"
+            }
+        }
     ],
     "contributor": "TODO: Les stagiaires comme ci-dessus?",
     "citation": "TODO un papier décrivant Pactole"