Kumar Dubey, J., Kumar Pandey, P. and Upadhyay, S.K. 2021. Characterization of Product of Pseudo-Differential Operators Involving Fractional Fourier Transform. The Journal of the Indian Mathematical Society. 88, 1-2 (Jan. 2021), 60–71. DOI:https://doi.org/10.18311/jims/2021/26085.