Nitish Kumar Bharadwaj, Dr. Dewanand Ramani,. “On Completeness of Ultra Real Number System and Strictly Positive Measure”. International Journal of Advanced Science and Technology 29, no. 1 (January 11, 2020): 466 - 468. Accessed April 18, 2024. http://sersc.org/journals/index.php/IJAST/article/view/3086.