1. Ahmad, I. A. (1980). Integrated mean square properties of density estimation by orthogonal series methods for dependent variables,Ann. Inst. Statist. Math., A, to appear.
2. Ahmad, I. A. (1979). Strong consistency of density estimation by orthogonal series methods for dependent variables,Ann. Inst. Statist. Math.,31, A, 279–288.
3. Ahmad, I. A. (1973). Nonparametric estimation of p.d.f.'s for dependent variables with application, Ph. D. dissertation, Florida State University.
4. Andrews, D. F., Bickel, P. J., Hampel, F. R., Huber, P. J., Rogers, W. H. and Tukey, J. W. (1972).Robust Estimates of Location, Princeton University Press, Princeton, N.J.
5. Bhattacharyya, G. K. and Roussas, G. G. (1969). Estimation of a certain functional of probability density function,Skand Aktuarietidskr.,52, 203–206.