Tamuntuan, G., Bijaksana, S., Gaffar, E., Russell, J., Safiuddin, la O. and Huliselan, E. 2013. The Magnetic Properties of Indonesian Lake Sediment: A Case Study of a Tectonic Lake in South Sulawesi and Maar Lakes in East Java. Journal of Mathematical and Fundamental Sciences. 42, 1 (Jul. 2013), 31-48. DOI:https://doi.org/10.5614/itbj.sci.2010.42.1.4.