California Code
ARTICLE 2 - Demand for Exchange of Expert Witness Information
Section 2034.240.

2034.240. The party demanding an exchange of information concerning expert trial witnesses shall serve the demand on all parties who have appeared in the action.

(Added by Stats. 2004, Ch. 182, Sec. 23. Effective January 1, 2005. Operative July 1, 2005, by Sec. 64 of Ch. 182.)