Traceability of the Virtual Population Models

To provide the users of the Virtual Population models with permanent digital access to each released version of the models and guarantee their unambiguous traceability, we have generated unique Digital Object Identifiers (DOI) for all the models we have released. We thereby warranty that all versions will always be available. 

Note that the DOIs do not vary with builts but with versions. Changes to the models that are likely to influence simulation results are associated with changes in version number.