@inproceedings{eprints1659,
          author = {Giorgio Gnecco and Marcello Sanguineti and Riccardo Zoppoli},
           title = {Suboptimal solutions to dynamic optimization problems: Extended Ritz method versus approximate dynamic programming},
       booktitle = {AIRO 2007},
            year = {2007},
           pages = {10},
             url = {http://eprints.imtlucca.it/1659/}
}