References
Witold Kosiński
with Prokopowicz, P. , Kacprzak, D. (2009). Fuzziness – representation of dynamic changes by ordered fuzzy numbers. In R. Seising (Ed.). Views on fuzzy sets and systems from different perspectives (pp. 485-508). Dordrecht: Springer.
with Starosta, B. (2009). Meta sets – another approach to fuzziness. In R. Seising (Ed.). Views on fuzzy sets and systems from different perspectives (pp. 509-532). Dordrecht: Springer.