Varma, N. K. and Singh, A.K. and Gupta, M.L. (2001) In-situ measurement of thermal conductivity in underground coal mines. Journal of Mines, Metals & Fuels, 49 (1&2). pp. 19-25. ISSN 0022-2755

Pandey, J.K. and Varma, N. K. and Singh, Arvind Kumar and Gupta, M.L. (1999) Development of SF6 Tracer gas technique for Measuring air flow rate. Journal of Mines, Metals & Fuels, 47 (11). pp. 289-291. ISSN 0022-2755

Varma, N. K. and Gupta, M.L. (1999) In-situ measurement of thermal diffusivity in underground coal mines. Journal of Mines, Metals & Fuels, 47 (7&8). pp. 172-176. ISSN 0022-2755

Singh, A.K. and Pandey, J.K. and Verma, N.K. and Gupta, M.L. (1998) Use of SF6 as Tracer Gas to Analyse Ventilation Problems. Journal of the Institution of Engineers (India), 79. pp. 11-14. ISSN 0257-442X

Varma, N. K. and Singh, Arvind Kumar and Pandey, J.K. and Gupta, M.L. (1997) Air Leakage Through Underground Ventilation Structures with Special Reference to Isolation Stoppings. Journal of Mines, Metals & Fuels, 45 (4). pp. 103-106. ISSN 0022-2755

Pandey, J.K. and Singh, Arvind Kumar and Jayanthu, S. and Varma, N. K. and Gupta, M.L. (1996) Techno-Economic Feasibility of Controlled Recirculation System of Ventilation. Indian Mining & Engineering Journal , 36 (12). pp. 31-37. ISSN 0019-5944

Singh, A.K. and Pandey, J.K. and Verma, N.K. and Gupta, M.L. (1996) Air Leakage Determination of Surface Airlock using Tracer Gas Technique. Minetech, 17 (2&3). pp. 74-77. ISSN 0970-7204

Gupta, M.L. and Varma, N.K. and Pandey, J.K. and Singh, A.K. (1996) Monitoring and Thermal Status Investigation of Underground Coal Mines of Raniganj Coalfield. Minetech, 17 (2&3). pp. 71-73. ISSN 0970-7204

Srivastava, S.C. and Bandopadhyay, L.K. and Gupta, M.L. and Sinha, S.K. (1995) On-Line Ventilation Network Analysis and Graphic Representation of Ventilation Parameters - Part 1, Planned, Designed and Current Air Quantities. Mining Technology , 77 (891). pp. 349-351. ISSN 0026-5276

Gupta, M.L. and Panigrahi, D.C. and Varma, N. K. and Pandey, J.K. (1993) Determination of Virgin Rock Temperature in Raniganj Coalfield. Journal of Mining Research , 1 (4). pp. 11-17. ISSN 0971-1899

Gupta, M.L. (1992) Development of a software to predict the climate in trunk and gate roads by the application of transient heat transfer process. Journal of Mines, Metals & Fuels, 40 (10&11). pp. 301-305. ISSN 0022-2755

Gupta, M.L. and Varma, N. K. and Sahay, N. (1987) Study of simple auxiliary Ventilation installation. Journal of Mines, Metals & Fuels, 35 (8). pp. 347-353. ISSN 0022-2755

Gupta, M.L. and Sahay, N. and Varma, N. K. (1985) Concepts in design of auxiliary ventilation system. Journal of Mines, Metals & Fuels, 33 (8). pp. 363-368. ISSN 0022-2755