Backgammon Rules writing

We are trying to develop a backgammon professional software, and thus, we are searching for someone to write us in deep details and analysis the rules of how to play all this game's variants. Most of its variants, are known only to Greek writers, thus we prefer someone greek to write us the rules, in english or greek... The games we want rules for, are: -Portes -Plakoto -Fevga -Gioul -Asso-dyo We are willing to pay 30$ for all 5 rulesets, as long as its 100% complete...