Reepmeyer, Christian, Spriggs, Matthew, Anggraeni, Lape, Peter, Neri, Leee, Ronquillo, Wilfredo P., Simanjuntak, Truman, Summerhayes, Glenn, Tanudirjo, Daud A., and Tiauzon, Archie (2011) Obsidian sources and distribution systems in Island Southeast Asia: new results and implications from geochemical research using LA-ICPMS. Journal of Archaeological Science, 38 (11). pp. 2995-3005.

Spriggs, Matthew, Reepmeyer, Christian, Anggraeni, Lape, Peter, Neri, Leee, Ronquillo, Wilfredo P., Simanjuntak, Truman, Summerhayes, Glenn, Tanudirjo, Daud A., and Tiauzon, Archie (2011) Obsidian sources and distribution systems in Island Southeast Asia: a review of previous research. Journal of Archaeological Science, 38 (11). pp. 2873-2881.