Measuring the Similarities Between the Lifetimes of Adult Danish Twins Born Between 1881-1930
研究了1881-1930年间出生的丹麦成年双胞胎的寿命相似性，使用统计方法分析双胞胎寿命数据，对人口学和遗传学研究者有参考价值。
Philip Hougaard, Bent Harvald, Niels V. Holm, Measuring the Similarities Between the Lifetimes of Adult Danish Twins Born Between 1881-1930, Journal of the American Statistical Association, Vol. 87, No. 417 (Mar., 1992), pp. 17-24