1. Vehicle routing problem: Models and solutions;C.-Y Liong;Journal of Quality Measurement and Analysis,2008
2. Vehicle Routing Problem with Time Windows, Book Chapter;B Kallehauge;Column Generation,2005
3. Vehicle Routing Problem: Models and Solutions;L C Yeun;Journal of Quality Measurement and Analysis,2008
4. Solving the Traveling Salesman Problem with the All different;J Vasilev;International Conference on Application of Information and Communication Technology and Statistics in Economy and Education,2015