This paper demonstrates that the bootstrap procedure suggested by Ferrier and Hirschberg (1997) gives inconsistent estimates, A very simple example is given to illustrate the statistical issues underlying nonparametric efficiency measurement and the problems with the Ferrier/Hirschberg approach, and may serve as a primer on bootstrapping in nonparametric models of production processes.
Simar, L., & Wilson, P. (1999). Some problems with the Ferrier/Hirschberg bootstrap idea. Journal of Productivity Analysis, 11(1), 67-80. https://doi.org/10.1023/A:1007735422028 (Original work published 1999)