Key points are not available for this paper at this time.
W. J. Owen, T. A. DeRouen, Estimation of the Mean for Lognormal Data Containing Zeroes and Left- Censored Values, with Applications to the Measurement of Worker Exposure to Air Contaminants, Biometrics, Vol. 36, No. 4 (Dec., 1980), pp. 707-719
Owen et al. (Mon,) studied this question.