model [B. Ranguelov et al., CR Acad. Bulgare Sci. 60, 389 (2007)]. In this paper we aim to
develop a complete picture of the model's behaviour in the framework of the notion of
universality classes. The basic assumption of the model is that the reference (“equilibrium”)
densities used to compute the supersaturation might be different on either side of a step, so
CL/CR≠ 1 (L/R stands for left/right in a step train descending from left to right), and that this …