Njagi, L., Nzimbi, B. M. and Moindi, S. K. (2018) “On Finite Dimensional Hilbert Space Frames, Dual and Normalized Frames and Pseudo-inverse of the Frame Operator”, Journal of Advance Research in Mathematics And Statistics, 5(11), pp. 01–10. doi: 10.53555/nnms.v5i11.528.