Except as otherwise stated, the code is copyright 2002-2024 Thomas Lumley

svyolr() and many of its methods are closely based on polr() from the
MASS package, copyright Brian Ripley and Bill Venables.

Ben Schneider wrote the C++ code and the R interface to it

The small-area estimation code is from the SUMMER project, written by
Peter Gao

The 'phoneframes' data set is taken from the Frames2 package by Antonio Arcos, Maria del Mar Rueda, Maria Giovanna Ranalli and David Molina

John Preston provided an example of the multistage rescaled bootstrap for testing.

Daniel Oehm at the Australian Bureau of Statistics wrote some improvements for calibrate()


