F. Börner, L. Haddad, and R. Pöschel, Minimal Partial Clones, Bulletin of the Australian Mathematical Society, vol.44, pp.405-415, 1991.

F. Börner and L. Haddad, Maximal Partial Clones with no finite basis, Algebra Universalis, vol.40, pp.453-476, 1998.

F. Börner,

M. Couceiro, L. Haddad, and K. Schölzel, On the Nonexistence of Minimal Strong Partial Clones, Proceedings of the 47th IEEE International Symposium on Multiple-Valued Logic, pp.82-87, 2017.
URL : https://hal.archives-ouvertes.fr/hal-01504011

M. Couceiro and L. Haddad, A Survey on Intersections of Maximal Partial Clones of Boolean Partial Functions, Proceedings of the 42nd IEEE International Symposium on Multiple-Valued Logic, pp.287-292, 2012.
URL : https://hal.archives-ouvertes.fr/hal-01093663

L. Haddad and K. Schölzel, Countable Intervals of Partial Clones, Proceedings 44th IEEE International Symposium on Multiple-Valued Logic, pp.155-160, 2014.

D. Lau, Function algebras on finite sets. A basic course on many-valued logic and clone theory, 2006.

K. Schölzel, Dichotomy on intervals of strong partial Boolean clones, Algebra Universalis, vol.73, pp.347-368, 2015.