Manville V, Johnston D, Stammers S, Scott B. Comparative preparedness in New Zealand and the Philippines for response to, and recovery from, volcanic eruptions: Case studies from the 1991 Pinatubo eruption and the 1995-6 eruptions of Ruapehu. BNZSEE. 2000;33(4):445-476. doi:10.5459/bnzsee.33.4.445-476