Thanks for reply and sorry that the files can't be used in this form.
I know that the html page are generated from the man groff format, but the thing is I am using a CAT system (memoQ) which uses a translation memory and speed up the translation process significantly.
The problem is that I can't import the groff files into memoQ.
I have tried several approaches to convert the man groff files to: rtf , ps, html formats which can be imported in memoQ, omegat , Trados SDL etc, but the issue is that there is no way to convert the translated files to man groff back. It seems that the only productive way to translate the man pages is to translate the files directly, but this is time consuming since you are not using a translation memory and term base.
Regarding po4a :
I have installed yesterday this package on my arch system and followed the documentation. I succeeded converting the man pages to pot files, import them in memoQ, translated, but I was not able to convert back to man page (I had some strange errors on po4a-translate command) and I had to give up. Maybe I didn't quite understand how the po4a system works.
Nevertheless I shall contact Laurentiu to have a chat with him about the process.