@article {IOPORT.03941254,
    author       = {Wetzel, R.},
    title        = {Ein Branch and Bound Algorithmus zur L\"osung eines Problems der Fahrplangestaltung. (A branch-and-bound algorithm for the solution of a vehicle routing problem).},
    year         = {1985},
    journal      = {Wissenschaftliche Zeitschrift},
    volume       = {9},
    issn         = {0323-6129},
    pages        = {279-285},
    publisher    = {Technische Hochschule Leipzig, Leipzig},
    abstract     = {A concept is described for solving a combined vehicle routing and scheduling problem. This problem was formulated in analysis of processes in technical construction. A graphtheoretic formulation is given and a branch-and-bound procedure based on a linear relaxation and using the graphic structure is proposed to solve the problem optimally.},
    identifier   = {03941254},
}