J.J. Kilgallen, "Jesus' First Trial: Messiah and Son of God (Luke 22:66-71)," Biblica 80 (1999): 401-414.

Kilgallen uses narrative-criticism to argue that the structure of Luke 22, 66-71, the first trial of Jesus particular to the third gospel, divides the trial of Jesus into two charges which correspond to the two titles, "Messiah" and "Son of God."

from "Summary":

"At the first trial of Jesus, that before the Sanhedrin, Mark has together: "Messiah, Son of God." Luke has intentionally separated the two titles. ...[T]he explanation for separating Son of God from Messiah in the Annunciation scene of the Gospel. It is Luke’s intention that the reader understand Son of God in a way that admittedly the Sanhedrin did not. The laws of narratology indicate that Luke 1,35, a part of the Lucan introduction, be used by the reader to interpret Son of God at Luke 22,70." (414)