© The Author(s). (STACS)

Copyright Holders: © The Author(s). (STACS)

 

Self-archiving policy

Conditions

Accepted version:

 

Published version:

 

Remarks:

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported license: http://creativecommons.org/licenses/by-nc-nd/3.0/legalcode.
In brief, this license authorizes each and everybody to share (to copy, distribute and transmit) the work under the following conditions, without impairing or restricting the authors’ moral rights:
Attribution: The work must be attributed to its authors.
Noncommercial: The work may not be used for commercial purposes.
No derivation: It is not allowed to alter or transform this work.
The copyright is retained by the corresponding authors.

Verification Date:

22.06.2012