Use of NeTEx interfaces

I am currently developing a NeTEx interface to be able to supply Samtrafiken with railway timetable data in NeTEx format, based on the NeTEx interface we are already using to supply Entur with railway timetable data in Norway..
I wish to know
a) who is the best contact person or persons in Sweden for this project
b) what facilities are there for testing generated Zip files that are to be uploaded to Samtrafiken
c) how can I download some existing Swedish railway timetables in NeTEx format