“…A successor to BIFOR2, called BIFDD (Hassard, 1987), was used by van Bragt, Rizwan-uddin and van Der Hagen for bifurcation analysis of nuclear-coupled thermal hydraulics in natural circulation BWRs (van Bragt et al, 1999(van Bragt et al, , 2000. Bifurcation analyses similar to those reported here have recently been reported (Zhou and Rizwan-uddin, 2002, 2004, 2005Dokhane et al, 2002Dokhane et al, , 2003aDokhane et al, , 2003b. However, they are restricted to stability and "local" bifurcation analyses.…”