@article{EFHRSV07,
author = {S. {Est\'evez Mart\'in} and A. J. {Fern\'andez} and M. T. {Hortal\'a-Gonz\'alez} and M. {Rodr\'iguez-Artalejo} 
and F. {S\'aenz-P\'erez} and del {Vado V\'irseda}, R.},
title = {A Proposal for the Cooperation of Solvers in Constraint Functional Logic Programming},
journal = {Electronics Notes in Theorical Computer Science},
pages = {37-51},
publisher = {{Elsevier Science}},
volume = {188},
year = {2007}
}