https://openlibrary.org/authors/OL650748A/M._G._S._Narayanan
https://en.wikipedia.org/wiki/M._G._S._Narayanan
https://www.sahapedia.org/mgs-narayanan-conversation-kesavan-veluthat
https://currentbooksonline.in/product-author/m-g-s-narayanan
https://www.mbibooks.com/writer/mgs-narayanan
