Tripathy, Binod Chandra, and Rupanjali Goswami. “On Triple Difference Sequences of Real Numbers in Probabilistic Normed Spaces”. Proyecciones (Antofagasta, On line) 33, no. 2 (March 23, 2017): 157-174. Accessed May 19, 2024. https://www.revistaproyecciones.cl/index.php/proyecciones/article/view/1285.