From "The Big Lie and the Elastic Truth: How to Invent a Coup" by Frank Miele (Real Clear Politics).
ADDED: By "to work to prevent the installation," I believe he means to argue for and pursue legal processes, not to physically obstruct others who are ostensibly pursuing their legal role. If he means more than that, I disagree. As for the idea of keeping going "as long as doubts persisted," there will always be some doubt, as there has been in many past elections. At some point, you need to stand down and allow the new administration to go forward. But, obviously, you can continue to believe that the person installed in power did not really win. You have freedom of thought and freedom of speech. I certainly remember many Democrats believing that George W. Bush did not really win in 2000. And did JFK really win in 1960? We're skeptical! But it's not treason!