Erratum to: J Sci Comput DOI 10.1007/s10915-012-9602-y

Funding information was omitted from the original publication. That information is as follows:

This work was supported by the US NSF under grant No. DMS-0810963, US–Israel Binational Science Foundation (BSF) under grant No. 2008094, and US ARO under grant No. W911NF-11-1-0384.