BARUAH, R K and SAIKIA, B K and Baruah, B P and DEY, N C (2008) X-Ray scattering study of the average polycyclic aromatic unit in Ledo coal. J Applied Crystallography, 41. pp. 27-30.

SAIKIA , B K and SAHU , O P and BARUAH , R K (2007) FT-IR spectroscopic investigation of high sulphur assam coals and their solvent-extracts. J GEOLOGICAL SOCIETY OF INDIA, 70 (6). pp. 917-922.

SAIKIA , B K and BORUAH, R K and GOGOI , P K (2007) XRD and FT-IR investigations of sub-bituminous Assam coals. Bulletin of Materials Science, 30 (4). pp. 421-426.