Kttj Ke-4 -, Volume 2, Pemeliharaan Jalan
The fourth conference of The Road Engineering Association of Asia and Australasia, volume 3. Material/equipment, pp. 233-246
Proceedings of the 9th Road Engineering Association of Asia and Australasia Conference (REAAA), volume 2
New Horizons In Rock Mechanics; Fourteenth Symposium On Rock Mechanics
Proceedings of the Specialty Conference on Performance of Earth and Earth Supported Structures, volume 1, part 1
Proceedings of the Specialty Conference on Performance of Earth and Earth Supported Structures, volume 1, part 1
The second Southeast Asian Conference on soil engineering