g3 sicilian for white

Does anyone know of any books or other learning references to this particular line of the sicilian?  I can't find any videos on chess.com or youtube specifically about it.  There is one chess mentor course on it but its very basic.  I like this line as it is a more posiional approach to the sicilian and it can make black's typical plans of getting play on the queenside with b5 difficult because of the bishop on g2 so it can be rather annoying.  

Nigel Davies wrote a Sicilian repertoire book for white based on the open Sicilian with g3.  Taming the Sicilian, I think?

Ok cool thanks.  I believe the variation is called the Zagreb variation.  ECO code B91.

I think it's better to play 6. h3 then 7. g4 and Bg2.

Is more challenging for black and doesn't waste tempi.

That is a very similar line as well.  Caruana played it in a game pretty recently.  Even though he lost lol.