When citing this digital document, please use the following Digital Object Identifier (DOI) :
To refer to this document on the net, please use the following link:
You can also test the resolution of the link here: 10.3931/e-rara-53928
Using a Digital Object Identifier (DOI) allows electronic documents to be referenced in a stable, globally unambiguous and non-location-dependent manner. It guarantees reliability in citing sources even if the Uniform Resource Locator (URL) changes. This is why DOIs are suitable for permanently guaranteed citation in scientific papers.
DOIs cannot be called up directly in a browser but are translated into URLs by a resolving service. The persistent resolution of these links is carried out by the International DOI Foundation (IDF).