Rai, Swapnil Kumar, et al. “New Finding of Silica-Deficient Sapphirine-Bearing Granulites from NNE of Suranganar Village, Southern Madurai Block, India”. Journal of Geological Society of India, vol. 97, no. 3, Mar. 2021, pp. 255-60, doi:10.1007/s12594-021-1675-5.