[Corpora-List] license question

[Alexander Paile]

Hi guys!
Could you recommend a nice license to publish a parallel corpus under? 
Our institute wants to make the corpus available to everybody as freely 
as possible without legal hassle, but we would like to be mentioned if 
the corpus is used, especially for commercial products like automatic 
translators and such. I'm no lawyer. Does GPL or LGPL sound good for a 
corpus? Any advice would be appreciated.

regards

Alexander Paile
Research institute for the languages of Finland