Hub‐and‐Spoke Networks in Air Transportation: An Analytical Review
综述了枢纽选址问题及其变体的分析进展，指出需要开发更可靠的多分配模型启发式算法，并研究模型产生整数解的条件，以解决经济学中不可分割资源分配的长期难题。
In this review we survey advances in analysis of the hub location problem and its variants. In the course of the review opportunities for enhanced analysis become apparent. We emphasize the most pressing areas for further work. We found that first, research needs to be devoted to developing more reliable heuristics for the multiple assignment model and its extensions and second, that additional research is needed to understand the conditions under which the model will tend to have integer solutions. Research in this area will contribute to the solution of a longstanding puzzle in economics about the allocation of indivisible resources.