paragraph_text: Gell-Mann, and, independently, George Zweig, then went on, in 1964, to postulate the quark model. This introduced quarks, the particles of which the hadrons were composed, a name coined by Gell-Mann through a reference to the book Finnegans Wake, written by James Joyce ("Three quarks for Muster Mark!" - book 2, episode 4). Zweig had referred to the particles as "aces" but Gell-Mann's name caught on.