- Sousa, E., and P. Luciano. 1995. Les principaux ravageurs du chene liege au Portugal. Leurs relations avec le declin des peuplements. [Principal pests of cork oak in Portugal. Their relation with population decline]. Proceedings of the meeting Integrated Protection in corkoak forests, at Tempio Pausania (Italy), 15-17 September 1994. Bulletin OILB SROP 18:18-23.
- Sousa, E., D. Debouzie, H. Pereira, and P. Luciano. 1995. Le role de l'insecte Platypus cylindrus F. (Coleoptera, Platypodidae) dans le processus de deperissement des peuplements de chene-liege au Portugal. [The role of the insect Platypus cylindrus F. (Coleoptera, Platypodidae) in the decline process of stands of cork oak in Portugal]. Proceedings of the meeting Integrated Protection in cork-oak forests, at Tempio Pausania (Italy), 15-17 September 1994. Bulletin OILB SROP 18:24-37.