c (i) The original colrow software: J. C. Díaz, G. Fairweather and c P. Keast, Algorithm 603: COLROW and ARCECO: FORTRAN Packages for c Solving Certain Almost Block Diagonal Linear Systems by Modified c Alternate Row and Column Elimination, ACM Transactions on c Mathematical Software, Volume 9, Issue 3, (September 1983), c Pages: 376-380, 1983, ISSN:0098-3500. c This software has been published in the Collected Algorithms of c the Association for Computing Machinery (ACM) calgo.acm.org and c is thus subject to ACM Software Copyright and License Agreement c www.acm.org/pubs/copyright_policy/softwareCRnotice.html. c We have modified this source code slightly: declarations like c array(1) were changed to array(*). c (ii) From the LINPACK (www.netlib.org/linpack/index.html)numerical c software collection: dsvdc (www.netlib.org/linpack/dsvdc.f). c We have modified this source code slightly: declarations like c array(1) were changed to array(*). The LINPACK website does not c provide any comment on legal restrictions associated with the c use of this software. c (iii) From the BLAS (www.netlib.org/blas/) numerical software c collection: daxpy,ddot,dscal,dswap,dnrm2,drotg. These routines c are subject to the following legal restrictions: c www.netlib.org/blas/faq.html#2