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      BAND_QR - LAPACK-Style QR Factorization of Banded Matrices
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      BAND_QR <br> LAPACK-Style QR Factorization of Banded Matrices
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      <b>BAND_QR</b>
      is a FORTRAN77 library which
      includes LAPACK-style routines to compute the QR factorization
      of a banded matrix,
      by Alfredo Remon, Enrique Quintana-Orti