Hi,
severall units like TG1 used the Sm 82.
Here you will find some first basic info about units using this AC:
http://www.ww2.dk/air/transport.html
like:
http://www.ww2.dk/air/transport/tg1.htm
I have some info about SM 82 in southern italy around 1943.
You may contact me via PM
Lino