I'm looking for books or articles on typesetting (western) music. Basically the musical equivalent for traditional typesetting, i.e. rules for spacing of symbols, justification, page layout, etc. I'm also interested in music-specific practices like staff positions, grouping notes, and adding an "empty" bar at the end of a line showing the new key signature starting in the next line.
Note: I'm not actually looking for explanations of what these notations actually mean, the history of these notations (unless important for the typesetting) or different notational systems in general.