Please read the licence and indicate at the bottom whether you accept or decline its terms.


Motivation and Preamble

The SIESTA program has been devised for its general use in research
within the academic community. Some conditions have been defined for
the use, distribution, and modification of SIESTA, which the authors
consider fair and within the common fair practices in the academic

1. Definitions

"The Authors" are:

    * Emilio Artacho, University of Cambridge, and IkerBasque and
    CIC-Nanogune, San Sebastián * José María Cela,
    Barcelona Supercomputing Center * Julian Gale, Curtin University
    of Technology, Perth * Alberto García, ICMAB-CSIC, Barcelona *
    Javier Junquera, Universidad de Cantabria, Santander * Pablo
    Ordejón, CIN2-CSIC, Barcelona * Daniel Sánchez-Portal, Centro
    de Física de Materiales, CSIC-UPV/EHU, San Sebastián * 
    José M. Soler, Universidad Autónoma de Madrid

Although we, the Authors, acknowledge that a limited number of
auxiliary subroutines were written by (or are based on previous
subroutines written by) other authors consider that the implementation
of all the basic algorithms of the SIESTA program is ours.

The Siesta team ("the Developers") are the Authors and:

    * Richard M. Martin, University of Illinois at Urbana-Champaign

"The Copyright-Holder" is the set of Authors.

The valid distributors of the Siesta package ("The Distributors") are
the Developers as specified above.

"The SIESTA package" is the suite of software, including the SIESTA
code itself, but also all other software, documentation, scripts, and
ancillary support material distributed as a single entity. This
Licence covers the entirety of said data.

The Licensee is the person (never an institution) to whom the SIESTA
package is distributed (under the terms of this Licence) by the
Distributors; they are bound by this agreement.


There is no warranty for any part of the SIESTA package. The SIESTA
package is provided by the Distributors "as-is" without warranty of
any kind, either express or implied, including but not limited to the
implied warranties of merchantability or fitness for a particular
purpose. In no event shall the Distributors be liable for any direct,
indirect, incidental, special, exemplary, or consequential damages
(including, but not limited to, procurement of substitute goods or
services; loss of use, data, or profits; or business interruption)
however caused and on any theory of liability, whether in contract,
strict liability, or tort (including negligence or otherwise) arising
in any way out of the use of this software, even if advised of the
possibility of such damage. The entire risk as to the quality or
performance of the program, or any action the Licensee may take based
on the output of any part of the SIESTA package, is with the Licensee.

3. Limitation of Usage 

The Licensee is hereby provided with a non-exclusive, royalty-free
right to install the SIESTA package in any (or several) of the
computers of the Licensee’s Centre, and manipulate it in order to
compile the SIESTA program and the auxiliary programs distributed in
the package, and to make the binary executable files (of SIESTA and
auxiliary codes) accessible to any independently licensed SIESTA user
that has access to the Licensee computers. The Licensee is bound by
this agreement to grant access to the (source or executable) files
only to people holding a valid Licence to use SIESTA, and prevent
access to any other party. 

This Licence does not grant the Licensee the right to use, develop or
distribute either the SIESTA package or any of its components. For
such purposes, a separate SIESTA user licence has to be issued to a
member or members of the Licensee Centre (person, not the
institution), if applicable.

The Licensee is hereby also requested to cite the following papers in
any document issued by the Centre that refers to the SIESTA package:

    1. “Self-consistent order-N density-functional calculations for
    very large systems”, P. Ordejón, E. Artacho and J. M. Soler,
    Phys. Rev. B (Rapid Comm.) 53, R10441-10443 (1996).

    2. “The SIESTA method for ab initio order-N materials simulation”
    J. M. Soler, E. Artacho,J. D. Gale, A. García, J. Junquera,
    P. Ordejón, and D. Sánchez-Portal, J. Phys.: Condens. Matt. 14,
    2745-2779 (2002).

Other papers relevant to the SIESTA package and method can also be
cited as best scientific practice dictates. Licensees are recommended
to send reference to the Developers of any publication containing
results wholly or partially derived from the results of use of the
SIESTA package.

4. Support 

The present Licence does not imply support services of any kind to the
Licensee by the Distributors, including, but not limited to,
installation, compilation and use of the software in the package.

5. All Other Rights 

All other rights not explicitly mentioned in this document are
reserved. In particular, the Authors reserve all rights to resolve any
and all conflicts arising in the development and distribution policies
of the SIESTA package.

I ACCEPT the terms of the Siesta Licence for Computer Centers.

I CANNOT ACCEPT the terms of the Siesta Licence for Computer Centers.