Citation: R. Basude et al., Influence of environmental conditions on a new surfactant-based contrast agent: ST68, ULTRASOUN M, 26(4), 2000, pp. 621-628
Citation: Jw. Duckworth, The difficulty of estimating population densities of nocturnal forest mammals from transect counts of animals, J ZOOL, 246, 1998, pp. 466-468