@article{ref1,
title="Optimal estimation under biased allocation of treatments",
journal="Biometrika",
year="1993",
author="Godambe, V. P. and Kunte, S.",
volume="80",
number="4",
pages="797-806",
abstract="SUMMARY This paper provides a semi-parametric solution to a problem proposed by Robbins & Zhang (1991). The solution is obtained utilizing the theory of optimum estimating functions (Godambe & Thompson, 1989). Our solution coincides with maximum likelihood estimation for the parametric model suggested by Robbins & Zhang (1991). Even for alternative models investigated in this paper, the efficiency of our estimation appears very close to that of maximum likelihood estimation.<p />",
language="",
issn="0006-3444",
doi="10.1093/biomet/80.4.797",
url="http://dx.doi.org/10.1093/biomet/80.4.797"
}