Dyrbye, Steven Harris, Thomas Golzen, "The Xenophobe's Guide to the Danes", Horsham, West Sussex: Ravette Publishing, 1997, 64 pp. Denmark - Language, Culture
Georgia (2002). A review of the welfare of zoo elephants in Europe (PDF). Horsham, West Sussex: RSPCA. Wiese, R. J.; Willis, K. (2006). "Population management