Comments on `The role of photoionization in positive streamer dynamics'

Abstract
It was noted that the model of streamer pseudo-branching, proposed in `The role of photoionization in positive streamer dynamics' (Kulikovsky A A 2000 J. Phys. D: Appl. Phys. 33 1514-24) in 2D geometry, cannot be vindicated within the frame of the physical model used in the article. It was also shown that the results of numerical simulation represented in the article are not repeatable.