@techreport{NA-08/12,
  abstract = "A standard algorithm for computing the QR factorization of a matrix&nbsp;<em>A</em>&nbsp;is Householder triangularization. Here this idea is generalized to the situation in which&nbsp;<em>A</em>&nbsp;is a quasimatrix, that is, a &ldquo;matrix&rdquo; whose &ldquo;columns&rdquo; are functions defined on an interval [<em>a,b</em>]. Applications are mentioned to quasimatrix leastsquares fitting, singular value decomposition, and determination of ranks, norms, and condition numbers, and numerical illustrations are presented using the chebfun system.",
  author = "Nick Trefethen",
  institution = "Oxford University Computing Laboratory",
  month = "July",
  number = "NA-08/12",
  title = "Householder triangularization of a quasimatrix",
  year = "2008",
}