1986, Article in monograph or in proceedings (Directorate General XIII of the Commission of the European Communities (Ed.), ESPRIT '86: Results and achievements, pp. 365-372)
1979, Article in monograph or in proceedings (John A. Michon, Eg G.J. Eijkman & Len F.W. de Klerk (eds.), Handbook of psychonomics vol. 2, pp. 347-407)