Boggs, P.
, Byrd, R.
, Donaldson, J.
and Schnabel, R.
(1989),
User's reference guide for ODRPACK::software for weighted orthogonal distance regression version 1.7, , National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.IR.89-4103
(Accessed October 7, 2024)