F. Davidson y Acioly, C.,
«Density in urban development», vol. no. 3. Lund University, Lund Centre for Habitat Studies, Lund, Sweden, p. 25 p : boxes, fig., tabs., 1996.
M. Falkenmark,
«Water supply for a rapidly growing population : taking a resource based approach : keynote paper», in
[Third Global Forum : Barbados : 30 October - 3 November 1995 : various papers presented], 1996, p. 22 p. : 9 fig., 2 tab.