COMPUTATIONAL MECHANICS, vol. 48, no. 1, page. 27 - 45, 2011-07
SIAM JOURNAL ON SCIENTIFIC COMPUTING, vol. 33, no. 4, page. 1860 - 1872, 2011-01
SIAM JOURNAL ON NUMERICAL ANALYSIS, vol. 49, no. 6, page. 2598 - 2617, 2011-01