@TechReport {acfr.tr2004,
    author = {M. Ambrosini and T. Caruso and S. Foresti and G. Righini},
    title = {A GRASP for the pickup and delivery problem with rear loading},
    institution = {Information Technology Department, University of Milan},
    journal = {Technical Report},
    address = {Crema, Italy},
    number = {65},
    month = {August},
    year = {2004}
}