Siettos, C. I., I. G. Kevrekidis, and P. G. Kevrekidis. (2003) 2003. “Focusing Revisited: a Renormalization Bifurcation Approach”. Nonlinearity 16 (2): 497-506.

Kevrekidis, P. G., S. K. Kumar, and I. G. Kevrekidis. (2003) 2003. “An Exploding Glass?”. Physics Letters A 318 (4-5): 364-72.