- Pfeffer, A., and V. Skuhravy. 1995a. Ips typographus L (Col, Scolytidae) in the Czech Republic (In German). Anzeiger für Schädlingskunde, Pflanzen- und Umweltschutz 68:152.
- Pfeffer, A., and V. Skuhravy. 1995b. Lykozrout smrkovy a jeho problematika II [The eight-toothed spruce bark beetle and associated problems]. Lesnicka Prace 748-10,30.