More relevant articles frome recent times -
https://government.economictimes.indiatimes.com/news/governance/andhra-pradesh-wants-three-capital-cities-on-decentralization-approach-for-overall-growth/72868073
https://www.bloombergquint.com/opinion/book-excerpt-taking-governance-decentralisation-seriously-by-vijay-kelkar-and-ajay-shah