Hi.

I am looking for a survey on the state of the art in pseudorandom generators vs

(1) constant depth circuits and/or (2) Branching Programs

For (1), is "Anindya De, Omid Etesami, Luca Trevisan and Madhur Tulsiani Improved Pseudorandom Generators for Depth 2 Circuits" state of the art?

For (2), given that Barrington's theorem states that width-5 poly size branching programs = NC1 in power; what limited model of branching programs is studied in terms of fooling branching programs with pseudorandom generators?

Thanks!