Detailed work in the Long Bia and Long Laai areas, N.E Kalimantan (exploration of parts of the Long Sului-Long Kujau Lineamenent) 1986-1987 report
Detailed work in the Long Laai area, N.E Kalimantan (The Long Laai Project) phase II (1985-1986) report
Follow-up work in the Long Laai area, N. E Kalimantan (The Long Laai Project) : Phase I (1984-85) Report