Tripathy, Binod Chandra, e Shyamal Debnath. 2012. “<b>On Generalized Difference Sequence Spaces of Fuzzy numbers</b> - Doi: 10.4025/actascitechnol.V35i1.15566”. Acta Scientiarum. Technology 35 (1):117-21. https://doi.org/10.4025/actascitechnol.v35i1.15566.