with Prade, H. , 2017, From the structures of opposition between similarity and dissimilarity indicators to logical proportions, in G. Dodig Crnkovic & R. Giovagnoli (eds.), Representation and reality in humans, other living organisms and intelligent machines, Dordrecht, Springer, pp. 279-299.
, 1976a, Phenomenology - a non-alternative to empiricism, in H. R. Garvin (ed.), Phenomenology, structuralism, semiology, Lewisburg, PA, Bucknell University Press, pp. 71-98.