The following publications are possibly variants of this publication:
- A Note on Minimal Partial ClonesFerdinand Börner, Lucien Haddad, Reinhard Pöschel. ismvl 1991: 262-267
- Monoidal Intervals of Partial ClonesLucien Haddad, Hajime Machida, Ivo G. Rosenberg. ismvl 2007: 9 [doi]
- Countable Intervals of Partial ClonesLucien Haddad, Karsten Schölzel. ismvl 2014: 155-160 [doi]
- Intervals of Partial Clones Containing Maximal ClonesLucien Haddad, Dietlinde Lau, Ivo G. Rosenberg. jalc, 11(4):399-421, 2006.
- On Intervals of Partial Clones of Boolean Partial FunctionsLucien Haddad, G. E. Simons. ismvl 2003: 315 [doi]
- Partial R-ClonesBoris A. Romov, Karsten Schölzel. ismvl 2014: 91-96 [doi]