pSIN: A scalable, Parallel algorithm for Seismic INterferometry of large-N ambient-noise data. - Po Chen; Nicholas J. Taylor; Ken G. Dueker; Ian S. Keifer; Andra K. Wilson; Casey L. McGuffy; Christopher G. Novitsky; Alec J. Spears; W. Steven Holbrook (Comput. Geosci., 2016)