1. Arpa, M.C. B., Maximo, R.P.R. and Javier, R.V. (2006): Mapping of Deposits from March to June 2006 Eruptions of Bulusan Volcano. Philippine Institute of Volcanology and Seismology, Quezon City, Unpublished Report of Investigation, 6p.
2. Bornas, M.A.V., Cahulogan, M.T., Tubianosa, B.S., Mirabueno, M.H.T. and Salili, N. (2007a): Report of Ocular Survey of Lahar and Muddy Streamflow Channels of Bulusan Volcano, Sorsogon Province, 15 and 17 October 2007. Philippine Institute of Volcanology and Seismology, Quezon City, Unpublished Report of Investigation, 8p.
3. Bornas, M.A.V., Cahulogan, M.T., Tubianosa, B.S., Laguerta, E.P., Ariola, E.M. and Solidum, R.U. (2007b): Report on Fallout Tephra Mapping and Aerial Survey of Bulusan Volcano, Sorsogon Province, 31 July-2 August 2007. Philippine Institute of Volcanology and Seismology, Quezon City, Unpublished Report of Investigation, 3p.
4. Bornas, M.A.V., Delos Reyes, P.J., Maximo, R.P.R. and Tubianosa, B.S. (2007c): Report on Ash Fall Mapping and Reconnaissance Investigation of Bulusan Volcano, Sorsogon Province, 12-17 April 2007. Philippine Institute of Volcanology and Seismology, Quezon City, Unpublished Report of Investigation, 3p.
5. Bornas, M.A.V., Delos Reyes, P.J., Maximo, R.P.R. and Tubianosa, B.S. (2007d): Quick Response Team Report on Mapping and Reconnaissance Investigation at Bulusan Volcano, Sorsogon Province, April 2007. Philippine Institute of Volcanology and Seismology, Quezon City, Unpublished Accomplishment Report, 2p.