KIBU2021-08-102021-08-102021-06-14http://erepository.kibu.ac.ke/handle/123456789/2721SPH 811:Mathematical physicsenAttribution-NonCommercial-ShareAlike 3.0 United Stateshttp://creativecommons.org/licenses/by-nc-sa/3.0/us/SPH 811:Mathematical physicsMathematical physicsSPH 811Other