Section 771 Of Article 2. Examination Of Witnesses From California Evidence Code >> Division 6. >> Chapter 5. >> Article 2.
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. (a) Subject to subdivision (c), if a witness, either while
testifying or prior thereto, uses a writing to refresh his memory
with respect to any matter about which he testifies, such writing
must be produced at the hearing at the request of an adverse party
and, unless the writing is so produced, the testimony of the witness
concerning such matter shall be stricken.
(b) If the writing is produced at the hearing, the adverse party
may, if he chooses, inspect the writing, cross-examine the witness
concerning it, and introduce in evidence such portion of it as may be
pertinent to the testimony of the witness.
(c) Production of the writing is excused, and the testimony of the
witness shall not be stricken, if the writing:
(1) Is not in the possession or control of the witness or the
party who produced his testimony concerning the matter; and
(2) Was not reasonably procurable by such party through the use of
the court's process or other available means.