Arabic music theory / composition articles

Hi, all.

While waiting for my first Oud to arrive I'm learning arabic music theory (maqams, ajnas, modulations...etc) mostly from maqamworld.com. I remember when I first studied western music theory a couple of years ago, I came across books that taught basic elements of musical compositions (melodic composition, harmonic composition, typical chord progressions...etc); Are there such books or articles for arabic music? Has any of you came across any literature that deal with studying arabic music composition?

Best Regards,
Ali