Key points are not available for this paper at this time.
C. M. Harding, A. W. Heathwood, R. G. Hunt, K. L. Q. Read, The Estimation of Animal Population Size by the Removal Method, Journal of the Royal Statistical Society. Series C (Applied Statistics), Vol. 33, No. 2 (1984), pp. 196-202
Harding et al. (Sun,) studied this question.