Please read the licence and indicate at the bottom whether you accept or decline its terms.
Siesta ACADEMIC LICENCE for INDIVIDUALS 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 community. 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. 2. NO WARRANTY 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 use of the Siesta package under the present Licence is restricted solely to members of academic institutions (including universities and non-military public research laboratories) and to academic purposes, i.e., leading to open publication of results, with neither withhold of information nor intentional delay in publication. Notwithstanding these general definitions, the Authors reserve the exclusive right to determine what purposes and persons are elegible for using the Siesta package under this Licence, and to withhold the right to use the software where they are not satisfied that either condition is fulfilled. The Licensee is hereby provided with a non-exclusive, royalty-free right to use any part of the Siesta package, and to display, publish, perform, or otherwise use results obtained by use of the Siesta package in any form, subject to the restriction that in any paper or other academic publication containing results wholly or partially derived from the results of use of the Siesta package, the following papers must be cited in the normal manner: 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 (1996). 2. The Siesta method for ab initio order-N materials simulation, José M. Soler, Emilio Artacho, Julian D. Gale, Alberto García, Javier Junquera, Pablo Ordejón and Daniel Sánchez-Portal, J. Phys.: Condens. Matter 14, 2745 (2002). Other papers relevant to the Siesta package and method should 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. The above-mentioned right to use the code is extensive to the members of the research group of the Licensee as long as the use is in collaboration with the Licensee leading to co-authored publication(s). 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. Modification Licensees are permitted to modify Siesta for their own private use; in any paper containing results wholly or partially derived from the use of a modified version of Siesta, the authors are required to state that a privately modified version of Siesta is used, and satisfy the conditions of use stated above. The Developers encourage Licensees to submit their modifications of the Siesta package to them, so that the Siesta package does not fork, and furthermore so that the package can be improved for all users. Licensees can thereby benefit from the ulterior developments of Siesta. To this end, the Developers wish to encourage Licensees to make any modifications to the Siesta package in as modular a fashion as possible: for example, interacting via files, or via well-defined interface calls. This permits maintenance of these modifications as a separate entity in many cases, and may allow their separation from Siesta and distribution as a separate piece of software: in that case, such software is not subject to this Licence, and the authors of the separate software are free to choose any licensing terms they desire. However, if a given modification must be incorporated directly into the Siesta package, the author(s) of any such modifications must provide a perpetual, royalty-free, irrevocable license to the Copyright-Holder, to further modify their modifications ("the Contributed Code") as may prove necessary for the future development of Siesta, and to distribute the Contributed Code (in its original or any later modified form) as part of the Siesta package. The Developers, in the interests of maintaining the efficiency of the Siesta package and the modularity of its code base, actively encourage all those considering modifications to the Siesta package to discuss their planned modifications with the Developers beforehand. 6. Redistribution The authors reserve the exclusive right to distribute the Siesta package. Licensees have no right to distribute the Siesta package, a modified or alternative version thereof, or any other program making direct use of parts of the Siesta package, without the prior written consent of the Distributors. 7. 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. Without accepting the Licence, a prospective Licensee does not have the right to use or modify the Siesta package. Everyone is permitted to copy and distribute verbatim copies of this Licence document, but changing it is not permitted.
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