TANGO Project

License:

All the TANGO Project components are free software; you can redistribute 
it and/or modify it under the terms of the GNU General Public License as 
published by the Free Software Foundation; either version 2 of the 
License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but 
WITHOUT ANY WARRANTY; without even the implied warranty of 
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General 
Public License for more details.

You should have received a copy of the GNU General Public License along 
with this program; if not, write to the Free Software Foundation, Inc., 
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. You can also find 
the GPL on the GNU web site.

Non-free versions of TANGO are available under terms different from 
those of the General Public License. Professors J. M. Martínez 
(martinez@ime.unicamp.br, martinezimecc@gmail.com) or E. G. Birgin 
(egbirgin@ime.usp.br, egbirgin@gmail.com) should be contacted for more 
information related to such a license, future developments and/or 
technical support.

In addition, we kindly ask you to acknowledge the TANGO Project and its 
authors in any program or publication in which you use of the TANGO 
Project components. For published works that use ALGENCAN we suggest 
referencing:

R. Andreani, E. G. Birgin, J. M. Martínez and M. L. Schuverdt, "On 
Augmented Lagrangian methods with general lower-level constraints", 
SIAM Journal on Optimization 18, pp. 1286-1309, 2007

and

R. Andreani, E. G. Birgin, J. M. Martínez and M. L. Schuverdt, 
"Augmented Lagrangian methods under the Constant Positive Linear 
Dependence constraint qualification", Mathematical Programming 111, 
pp. 5-32, 2008

For published works that use GENCAN we suggest referencing:

E. G. Birgin and J. M. Martínez, "Large-scale active-set 
box-constrained optimization method with spectral projected gradients", 
Computational Optimization and Applications 23, pp. 101-125, 2002.

For published works that use SPG we suggest referencing:

E. G. Birgin, J. M. Martínez and M. Raydan, "Nonmonotone spectral 
projected gradient methods on convex sets", SIAM Journal on 
Optimization 10, pp. 1196-1211, 2000,

and

E. G. Birgin, J. M. Martínez and M. Raydan, "Algorithm 813: SPG - 
software for convex-constrained optimization", ACM Transactions on 
Mathematical Software 27, pp. 340-349, 2001.

(See also other related works in the TANGO Project home page:

http://www.ime.usp.br/~egbirgin/tango/)