I have seen, throughout various Trek novels, especially the Vulcan Soul trilogy and the ENT novels, many references to the Rihannsu novels of Diane Duane(Romulan colony world featured in one of the books, style of names and language of the Romulans, idea that they have honour blades, though we never saw these in any Trek series, and I think S'Task (sp?) is mentioned in the Third Vulcan Soul book, which seems to reference to early Romulan history from "The Romulan Way" and "Spock's World", if I recall correctly. Are these references simply tipping of the hats to Duane's excellent expansions on the Romulan culture, or are these authors including the events of The Rihannsu novels into the main novel continuity (if there is one?), or are those events considered part of an alternate reality, like Star Trek '09?