Stem superconcentr$ (all stems)
3 papers:
STOC-1993-Pippenger #self- Self-routing superconcentrators (NP), pp. 355–361.
STOC-1985-Alon #sorting- Expanders, Sorting in Rounds and Superconcentrators of Limited Depth (NA), pp. 98–102.
STOC-1983-DolevDPW- Superconcentrators, Generalizers and Generalized Connectors with Limited Depth (Preliminary Version) (DD, CD, NP, AW), pp. 42–51.










