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From page 135...
... . For human populations, CRC methods are referred to as "dual-system methods" or "dual-list methods." Let N be the population size, n and m be the initial and second sample sizes, and X be the number of marked individuals in the second sample.
From page 136...
... They also developed log-linear quasi-symmetry models. Other extensions include methods of finite mixtures to partition the population into two or more groups with relatively homogeneous capture probabilities.
From page 137...
... Under assumptions that individuals continue to attempt crossings until they succeed, that the probability of success is the same for each attempt, and other strong assumptions, he derives the equivalent of the Petersen estimator for the number of unauthorized crossers. He does not develop measures of uncertainty of this estimate, nor does he tie the work into the broader CRC literature.
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