Kaviyarasan G. Here are some starting points, one is here on ResearchGate (Basic Google Scholar Search ;-) )
Skogley, C. R., & King, J. W. (1968). Controlled Release Nitrogen Fertilization of Turfgrass 1. Agronomy Journal, 60(1), 61-64.
Article Controlled Release Nitrogen Fertilization of Turfgrass1
Campbell, J. B. (1967, April). Use of Petroleum Wax in the Production of a Controlled Release Fertilizer. In World Petroleum Congress (pp. WPC-12737). WPC. https://onepetro.org/WPCONGRESS/proceedings-abstract/WPC07/All-WPC07/198625
Rajale, G., & Prasad, R. (1973). Nitrification inhibitors and slow-release nitrogen fertilizers for rice (Oryza sativa L.). The Journal of Agricultural Science, 80(3), 479-487. doi:10.1017/S002185960005812
International Rice Commission. (1966). Use of controlled release nitrogen fertilizers in paddy fields. In a report presented to the Tenth Meeting of IRC Working Party on Rice soils, water, and Fertilizers, Lake Charles, Louisiana, USA.