- Hijii, N., H. Kajimura, T. Urano, H. Kinuura, and H. Itami. 1991. The mass mortality of oak trees induced by Platypus quercivorus (Murayama) and Platypus calamus Blandford (Coleoptera: Platypodidae). The density and spatial distribution of attack by the beetles. Journal of the Japanese Forestry Society 73:471-476.
- Hijii, N., H. Kajimura, T. Urano, H. Kinuura, and H. Itami. 1991. The mass mortality of oak trees induced by Platypus quercivorus (Murayama) and Platypus calamus Blandford (Coleoptera: Platypodidae) — Density and spatial distribution of attack by the beetles . Journal of the Japanese Forestry Society 73:471-476.