Duarah, B. P., Singh, W. I. and Deka, D. J. (2011) “The Barail sandstones of Ukhrul area, Manipur, India: a study on provenance and tectonic environment based on petrographic, heavy mineral and geochemical data”, Journal of Nepal Geological Society, 43, pp. 53–68. doi: 10.3126/jngs.v43i0.24897.