Nonequilibrium reaction-diffusion structures in rigid and visco-elastic media : knots and unstable noninertial flows Peter J. Ortoleva (1989) ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique
Nonlinear diffusion from a delocalized source : affine self-similarity, time reversal, & nonradial focusing geometries Jochen Denzler, Robert J. McCann (2008) Annales de l'I.H.P. Analyse non linéaire