Memoir on Prof. V. Radhakrishnan written by Prof. R. Nityananda and Prof. W. M. Goss.
Please find more information from the following links
https://rahist.nrao.edu/rad_bio-memoir.shtml
https://rahist.nrao.edu/VR_NRAO_WMG_RN_final_031223-ENBedits3_041223.pdf