Piotr, P. et al.(2017).Theory and applications of ordered fuzzy numbers :a tribute to Professor Witold Kosiński .Cham, Switzerland:Springer Open.
Gaya MLA
Prokopowicz, Piotr. et al."Theory and applications of ordered fuzzy numbers :a tribute to Professor Witold Kosiński".Cham, Switzerland:Springer Open,2017.Electronic Resource.