Where is a good place to buy glow in the dark sheets.

[PocketBeam]

I am looking for something that will glow a long time, Stontium Aluminate, and is priced well for what you get. Google turns up a lot of places, many don't sell the right stuff, i.e. Zinc Sulfide, or pre cut stars or they don't sell to the public, etc.

So any help is appreciated. Thanks.

Keith