For the original ARPACK library included in rARPACK (<= 0.7-0),

Copyright (c) 1996-2008 Rice University.  
Developed by D.C. Sorensen, R.B. Lehoucq, C. Yang, and K. Maschhoff.
All rights reserved.

For the modified version of ARPACK included in rARPACK (<= 0.7-0),
i.e. arpack-ng,

Copyright (c) 2001-2011 - Scilab Enterprises
Updated by Allan Cornet, Sylvestre Ledru.

Copyright (c) 2010 - Jordi Gutiérrez Hermoso (Octave patch)

Copyright (c) 2007 - Sébastien Fabbro (gentoo patch)

