The Relation between the Blue Cross Market Share and the Blue Cross "Discount" on Hospital Charges
研究了蓝十字保险公司在地方市场的份额与其从医院获得的收费折扣之间的关系，利用1981年的数据分析了市场力量对价格谈判的影响。
Roger Feldman, Warren Greenberg, The Relation between the Blue Cross Market Share and the Blue Cross "Discount" on Hospital Charges, The Journal of Risk and Insurance, Vol. 48, No. 2 (Jun., 1981), pp. 235-246