with Inthorn, J. , 2015, Having the final say: machine support of ethical decisions of doctors, in S. Van Rysewyk & M. Pontier (eds.), Machine medical ethics, Dordrecht, Springer, pp. 181-206.
, 2012, Warren Weaver's "science and complexity" revisited, in R. Seising & V. Sanz González (eds.), Soft computing in humanities and social sciences, Dordrecht, Springer, pp. 55-87.
with Sanz González, V. , 2012, From hard science and computing to soft science and computing – an introductory survey, in R. Seising & V. Sanz González (eds.), Soft computing in humanities and social sciences, Dordrecht, Springer, pp. 3-36.
with Sanz González, V. (eds) , 2012, Soft computing in humanities and social sciences, Springer, Dordrecht.
with Limberg, J. , 2009, Fuzzy set theory and the philosophical foundations of medicine, in R. Seising (ed.), Views on fuzzy sets and systems from different perspectives, Dordrecht, Springer, pp. 321-344.
, 2009, Fuzzy sets and systems and philosophy of science, in R. Seising (ed.), Views on fuzzy sets and systems from different perspectives, Dordrecht, Springer, pp. 1-35.
(ed) , 2009, Views on fuzzy sets and systems from different perspectives: philosophy and logic, criticisms and applications, Springer, Dordrecht.
, 2007, The fuzzification of systems: the genesis of fuzzy set theory and its initial applications – developments up to the 1970s, Springer, Dordrecht.
with Avenhaus, R. , 1999, Fuzzy Theorie — eine Alternative zur Stochastik?: Eine Podiumsdiskussion, in R. Seising (Hrsg.), Fuzzy Theorie und Stochastik, Wiesbaden, Vieweg+Teubner, pp. 268-283.
, 1999, Einleitung, in R. Seising (Hrsg.), Fuzzy Theorie und Stochastik, Wiesbaden, Vieweg+Teubner, pp. 1-37.
(ed) , 1999a, Fuzzy Theorie und Stochastik: Modelle und Anwendungen in der Diskussion, Vieweg+Teubner, Wiesbaden.