1 An Integrated Modelling Approach for the Bicriterion Vehicle Routing and Scheduling Problem with Environmental Considerations Konstantinos N. Androutsopoulos 1 Department of Management Science and Technology, School of Business, Athens University of Economics and Business, 76 Patission str.,104 34, Athens, Greece, Tel: 0030 210 8203 862, e-mail: kandro@aueb.gr Konstantinos G. Zografos Lancaster University Management School, Department of Management Science, Centre for Transport and Logistics, Lancaster, LA1 4YX, United Kingdom, k.zografos@lancaster.ac.uk 1 Author for correspondence