L. Njagi, B. M. Nzimbi, S. K. Moindi. On Pseudo-inverses and Duality of Frames in Hilbert Spaces. Int. J. Math. And Appl. [Internet]. 2019 Jun. 15 [cited 2024 May 3];7(2):75-88. Available from: http://ijmaa.in/index.php/ijmaa/article/view/250