Tripathy, B. C., & Debnath, S. (2012). <b>On generalized difference sequence spaces of fuzzy numbers</b> - doi: 10.4025/actascitechnol.v35i1.15566. Acta Scientiarum. Technology, 35(1), 117–121. https://doi.org/10.4025/actascitechnol.v35i1.15566