Notes on: Fletcher, R. & Xu, C. (1987): Hybrid methods for nonlinear least squares
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`View on DOI <http://dx.doi.org/10.1093/imanum/7.3.371>`_

.. code-block:: bibtex

   @article{Fletcher_hybrid_1987,
     author    = {Fletcher, R. and Xu, C.},
     title     = {Hybrid Methods for Nonlinear Least Squares},
     journal   = {IMA Journal of Numerical Analysis},
     volume    = {7},
     number    = {3},
     pages     = {371–389},
     year      = {1987},
     doi       = {10.1093/imanum/7.3.371},
     url       = {http://dx.doi.org/10.1093/imanum/7.3.371},
     issn      = {1464-3642},
     publisher = {Oxford University Press (OUP)},
   }