1. Aitchison J (1955) On the distribution of a positive random variable having a discrete probability mass at the origin. J Am Stat Assoc 50: 901–908
2. Cook DO, Kieschnick R, McCullough BD (2004) On the heterogeneity of corporate capital structures and its implications. SSRN working paper; available at http://ssrn.com/abstract=671061
3. Doornik JA, Tibshirani RJ (2006) Object-Oriented matrix language using Ox, 5n ed. Timberlake Consultants Press, London
4. Efron B, Tibshirani RJ (1993) An introduction to the bootstrap. Chapman and Hall, New York
5. Feuerverger A (1979) On some methods of analysis for weather experiments. Biometrika 66: 665–668