Before revision:  We formalize the homogeneous banking network model of Nier et al. and its corresponding heterogeneous version, formalize the synchronous shock propagation procedures outlined in that paper , define two appropriate stability measures and investigate the computational complexities of evaluating these measures for various network topologies and parameters of interest.
After revision:  We formalize the homogeneous banking network model of Nier et al. and its corresponding heterogeneous version, formalize the synchronous shock propagation procedures , define two appropriate stability measures and investigate the computational complexities of evaluating these measures for various network topologies and parameters of interest.