Pawirodikromo, Widodo. 2018. “The Estimated PGA Map of the Mw6.4 2006 Yogyakarta Indonesia Earthquake, Constructed from the Modified Mercalli Intensity IMM”. Bulletin of the New Zealand Society for Earthquake Engineering 51 (2):92-104. https://doi.org/10.5459/bnzsee.51.2.92-104.