Here are the opinions in Stand Up For California v. State of California (PDF). An excerpt from the lead opinion:
The judgment is reversed. The Governor’s concurrence is invalid under the facts alleged in this case. Plaintiffs have stated a cause of action for a writ of mandate to set the concurrence aside on the ground that it is unsupported by legal authority. The matter is remanded for further proceedings, and the trial court is directed to vacate its order sustaining the demurrers and enter a new order overruling them.
Briefs: