1. Ando, M. and Kimura, M. (2003). A characterization of the neighborhoods defined by certain special capacities and their applications to bias-robustness of estimates, J. Statist. Plann. Infer., 116, 61–90.
2. Huber, P. J. (1964). Robust estimation of a location parameter, Ann. Math. Statist., 35, 73–101.
3. Huber, P. J. (1981). Robust Statistics, John Wiley, New York.
4. Jurecková, J. (1971). Nonparametric estimate of regression coefficients, Ann. Math. Statist., 42, 1328–1338.
5. Jurecková, J. and Sen, P. K. (1996). Robust Statistical Procedures: Asymptotics and Interrelations, John Wiley, New York.