File: src/PartialSort.c
    Copyright (C) for the C code of the partial quicksort algorithm in
    src/PartialSort.c belongs to Ariel Faigon (1987).

File: src/mscale.c
    The C code for the rho functions belongs to the authors of R package
    robustbase_0.92-5 with Copyright (C)
     * Peter Rousseeuw and Christophe Croux;
     * Valentin Todorov <valentin.todorov@chello.at>
     * Andreas Ruckstuhl <andreas.ruckstuhl@zhaw.ch>
     * Matias Salibian-Barrera <matias@stat.ubc.ca>
     * Tobias Verbeke <tobias.verbeke@openanalytics.eu>
     * Manuel Koller <mkoller@ispm.unibe.ch>
     * Martin Maechler <maechler@stat.math.ethz.ch>