Main, I. G., P. G. Meredith, J. R. Henderson, and P. R. Sammonds. 1994. “Positive and Negative Feedback in the Earthquake CycIe: The Role of Pore Fluids on States of Criticality in the Crust”. Annals of Geophysics 37 (6). https://doi.org/10.4401/ag-4148.