A hopf bifurcation on a parabolic free boundary problem with pushchino dynamics
YoonMee Ham, Byong-In Seung · Journal of the Korean Mathematical Society · 1995
A hopf bifurcation of a free boundary (or an internal layer) occurs in solidification, chemical reactions and combustion. It is a well-known fact that a free boundary usually appear as sharp transitions with narrow width between two materials ([2]).