Sobel, Milton; Bernard, S. R.; Uppuluri, V. R. R. On the distribution of the time required to remove white balls from an urn. (English) Zbl 0577.60015 Bull. Math. Biol. 47, 791-797 (1985). MSC: 60C05 PDFBibTeX XMLCite \textit{M. Sobel} et al., Bull. Math. Biol. 47, 791--797 (1985; Zbl 0577.60015) Full Text: DOI
Sobel, M.; Bernard, S. R.; Uppuluri, V. R. R.; Nestor, C. W. jun. Four-urn catenary model for excretion. (English) Zbl 0536.92015 Bull. Math. Biol. 46, 219-227 (1984). MSC: 92Cxx 60C05 PDFBibTeX XMLCite \textit{M. Sobel} et al., Bull. Math. Biol. 46, 219--227 (1984; Zbl 0536.92015) Full Text: DOI
Bernard, S. R.; Sobel, Milton; Uppuluri, V. R. R. On a two urn model of Polya-type. (English) Zbl 0445.60011 Bull. Math. Biol. 43, 33-45 (1981). MSC: 60C05 PDFBibTeX XMLCite \textit{S. R. Bernard} et al., Bull. Math. Biol. 43, 33--45 (1981; Zbl 0445.60011) Full Text: DOI