Taken from software Perseus, all rights belong to the author who takes the screen (as written in Copyright file).
Abstract from "Copyright.txt", included on installation:
4. COPYRIGHT. [...] ELItalia ... autorizza comunque qualsiasi utilizzo dei dati forniti o generati con il software. I diritti d'autore sulle immagini o i documenti stampati generati con il software appartengono all'utente che li ha realizzati.
Translated: ELItalia ... authorizes any usage of the data supplied or generated with the software. The copyright of images or documents generated with the software belongs to the user who takes them.
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.