diff --git a/CONTRIBUTING_CENTRAL_DATA_MODEL.md b/CONTRIBUTING_CENTRAL_DATA_MODEL.md
index 8f4e3020..58ee96aa 100644
--- a/CONTRIBUTING_CENTRAL_DATA_MODEL.md
+++ b/CONTRIBUTING_CENTRAL_DATA_MODEL.md
@@ -155,9 +155,10 @@ Now pull (blue arrow), and delete the branch.
 Now you have again the same version as in gitlab. For new changes, create a new branch and repeat the process.
 
 ## Documentation and authoring
-There can be two types of authors, that one who created the model and that one who coded it. If they are not the same person, 
-in the headers of the classes must be just the name of the coder, who is the reference person to ask anything about the code,
+There are two types of authors, that one who created the model and that one who coded it. If they are not the same person, 
+in the headers of the classes must appear just the name of the coder, who is the reference person to ask anything about the code,
 and the one in charge of maintaining it, and interacting with the git.
 
 The author of the data model will appear in the official documentation of the Insel4Cities platform. In those documents, 
-a larger explanation of the data model should be also added.
+a larger explanation of the data model should be also added. This official documentation is under development and will be 
+linked here as soon as it is available.