Kresch: Cycle groups for Artin stacks (1999)
Vistoli: Intersection theory on algebraic stacks and on their moduli spaces (1989)
arXiv: Experimental full text search
AG (Algebraic geometry)
Stacks
Joshua: http://www.math.uiuc.edu/K-theory/0373, http://www.math.uiuc.edu/K-theory/0374
Toen: On motives for DM stacks. Discusses Chow rings and Chow motives, 2 different defs. Motivation: Gromov-Witten invariants.
Gillet: K-theory and Intersection theory, section 6.4.
Title: Rationality and Chow-Kuenneth decompositions for some moduli stacks of curves. Authors: JN Iyer and S. Mueller-Stach http://arxiv.org/abs/0906.0683
nLab page on Chow groups of stacks