(i)        J. Richard and S. N. Netsebula. (2005). Production of allelopathic substances in an invasive plant species, Lantana camara as a means of out-competing other plants in a bush-fallow. Tropical Biology Association fields reports, Nairobi – Kenya . 15pp

(ii)       J. Richard. (2005). Increasing nutritional value of the oyster mushroom (Pleurotus spp) by incorporating foliage of Gliricidia sepium in the growing substrates. A special project submitted to the Faculty of Forest and Nature Conservation of the Sokoine University of Agriculture as a requirement for BSc. Forestry. 39pp

(iii)       J. Richard. (2007). Abundance and distribution of an alien plant Castilla elastica (Panama rubber) in Amani Nature Reserve, Tanzania . MSc. Dissertation, Sokoine University of Agriculture

(iv)       J. Richard, Hulme, P. E. and Madoffe, S. S. (2008).  Is an alien plant Castilla elastica, a threat to plant diversity in lowland tropical rain forest? A scientific paper for submission to African Journal of Ecology