CA Prob Code Section 12521

(a)

A petition for probate of a nondomiciliary decedent’s will under this article shall include both of the following:

(1)

The will or an authenticated copy of the will.

(2)

An authenticated copy of the order admitting the will to probate in the sister state or foreign nation or other evidence of the establishment or proof of the will in accordance with the law of the sister state or foreign nation.

(b)

As used in this section, “authenticated copy” means a copy that satisfies the requirements of Article 2 (commencing with Section 1530) of Chapter 2 of Division 11 of the Evidence Code.