Key points are not available for this paper at this time.
B. W. Silverman, M. C. Jones, E. Fix and J.L. Hodges (1951): An Important Contribution to Nonparametric Discriminant Analysis and Density Estimation: Commentary on Fix and Hodges (1951), International Statistical Review / Revue Internationale de Statistique, Vol. 57, No. 3 (Dec., 1989), pp. 233-238
Silverman et al. (1989) studied this question.