1. Amos, G.L. Silica in Timbers. Bulletin No. 267, Commonwealth Scientific and Industrial Research Organization, Melbourne, l952.
2. Cultural Forests of the Amazon: A Historical Ecology of People and Their Landscapes;Balée,2013
3. Comparative studies of modern phytolith assemblages from inter-tropical Africa;Barboni;Palaeogeogr. Palaeoclimatol. Palaeoecol.,2007
4. Die blattspodogramme der Urticaceae und ihre verwendbarkeit fȕr die systematik;Bigalke;Beiträge zur Biologie der Pflanzen,1933
5. Long-term man-environment interactions in the Bolivian Amazon: 8000 years of vegetation dynamics;Brugger;Quat. Sci. Rev.,2016