“…Among the numerous works, we can mention the following ones: [ALA], [ALA2], [ALA3], [ACG], [ALA4], [BLR], [BRT], [CDCFS], Downloaded 01/05/15 to 129.2.19.100. Redistribution subject to SIAM license or copyright; see http://www.siam.org/journals/ojsa.php [CDCFS2], [DLT], [CDCFT], [CHEN1], [CHEN2], [ELN], [LA-TO], [Liu], [LZ], [AN], [NP], [NP2], [NV], [MAR], [MAR2], [VM], [NA1], [NA2], [NA3], [T], [Z].…”