Thesis: Economic optimization of integrated soil fertility management strategies for maize-based production systems: A case study of smallholder farm typologies in Central Kenya. Dept. of Agricultural Economics, University of Nairobi.
Thesis: The competitiveness of agroforestry-based and other soil fertility enhancement technologies for smallholder food production in western Kenya. Department of Agricultural Economics, University of Nairobi.
Maithya used the PAM framework to compare household-level benefits of applying different soil fertility management options. His 2006 article has been widely downloaded and cited.