1. J.R. King, 2004 (personal communication).
2. Parabolic Systems;Eidelman,1969
3. Partial Differential Equations;Friedman,1983
4. Higher order nonlinear degenerate parabolic equations;Bernis;J. Differential Equations,1990
5. Geometric Sturmian Theory of Nonlinear Parabolic Equations and Applications;Galaktionov,2004