Awonusika, R. O. “Spectral Invariants of Laplacians on Quaternionic Projective Spaces Pn(H) (n  1)”. International Journal of Mathematical Sciences and Optimization: Theory and Applications, Vol. 6, no. 2, Feb. 2021, pp. 886 -01, doi:10.6084/m9.figshare.13829129.