BIBCYT http://bibcyt.ucla.edu.ve/cgi-win/be_alex.exe?Ultimo&Nombrebd=BIBCYT UCLA - Biblioteca de Ciencias y Tecnologia Felix Morales Bueno Chao, A. P Principal Yip, P.S.F S Secundario Lee, S.M S Secundario Chu, W. S Secundario Population size estimation based on estimating functions for closed capture-recapture models