@inproceedings{grps2007-69,

   author = "Antonio Garrido, Eva Onaindia, Oscar Sapena",

   title = "Constraint Programming for Planning Routes in an E-learning Environment",

   booktitle = "CP-ICAPS 2007 Joint Workshop on Constraint Satisfaction Techniques for Planning and Scheduling Problems",

   pages = "30-37",

   year = "2007"

}