(1983). Aphid antagonists. Proc. of a Meeting of the EC Experts Group Portrici (Italy) 23-24 November 1982. Rotterdam: Balkema, VIII, 143 p. : tab.
Aphid antagonists: Proc. of a Meeting of the EC Experts Group Portrici (Italy) 23-24 November 1982. Rotterdam: Balkema; 1983. p. VIII, 143 p. : tab. ISBN: 90 6191 505 8.