“…Unfortunately, in a multiple-product framework such a system becomes rather unwieldy and it becomes difficult to solve the problem of short-run identification. Nevertheless, the approaches reported by Harbo, Johansen, Nielsen, andRahbek (1998), Kuiper, Pennings, andMeulenberg (2002), Pesaran, Shin, & Smith (2000), Rahbek and Mosconi (1999), Spirtes, Glymour, and Scheines (2001), and Swanson and Granger (1997) are among those offering ways to overcome these problems.…”