1.Ahmad, B., Khokhar, S.B. and Badar, H. 2001. Economics of laser land levelling in district Faisalabad. Pak. J. Appl. Sci., 1(3): 409- 412.

2.Ali, A., Hussain, I. and Erenstein, O. 2018. Laser-land levelling adoption and its impact on water use, crop yields and household income: Empirical evidence from the rice-wheat system of Pakistan Punjab. Food Pol., 77: 19-32.

3.Aryal, J.P., Bhatia, M., Jat, M.L. and Sidhu, H.S. 2014. Impacts of laser land levelling in rice-wheat rotations of the Northwestern Indo-Gangetic Plains of India. In World Congress of Environmental and Resource Economists, June 28 - July 2, 2014. Istanbul, Turkey.

4.Aryal, J.P., Rahut, D.B., Jat, M.L., Maharjan, S. and Erenstein, O. 2018. Factors determining the adoption of laser land levelling in the irrigated rice-wheat system in Haryana, India. J. Crop Improvement, 32(4): 477-492.

5.Chia, Raymond. 2013. Laser Land Levelling, Reporter 63: The Global Magzine of Leica Geosystems, Switzerland.

6.Conservation agriculture, “Conservation Agriculture: Resource productivity and efficiency”, IV World Congress on Conservation Agriculture, New Delhi, PACA, Ist Floor, NASC Complex, DPS Marg, Pusa, New Delhi - 110012 INDIA, 2009. Available: www.conserveagri.org, 2009.

7.Gill, G.J. 2014. An assessment of the impact of laser-assisted precision land levelling technology as a component of climate-smart agriculture in the state of Haryana, India. New Delhi: CIMMYTCCAFS, International Maize and Wheat Improvement Center (CIMMYT).

8.Jat, M.L., Gathala, M.K., Ladha, J.K., Saharawat, Y.S., Jat, A.S., Vipin Kumar, Sharma, S.K., Kumar, V. and Gupta, R. 2009. Evaluation of precision land levelling and double zero-till systems in the rice–wheat rotation: Water use, productivity, profitability and soil physical properties. Soil and Tillage Res., 105(1): 112-121.

9.Jat, M.L., Chandna, P., Gupta, R., Sharma, S.K. and Gill, M.A. 2006. Laser land levelling: A precursor technology for resource conservation. Rice-Wheat Consortium Technical Bulletin Series, 7: 48.

10.Jat, M.L., Gupta, R., Saharawat, Y.S. and Khosla, R. 2011. Layering precision land levelling and furrow irrigated raised bed planting: Productivity and input use efficiency of irrigated bread wheat in Indo-Gangetic Plains. Am. J. Plant Sci., 2(04): 578.

11.Kahlown, M.A., Raoof, A. and Hanif, M. 2000. Rice yield as affected by plant densities. Mona Experimental Project Bhalwal, Report No. 238.

12.Kaur, B., Singh, S., Garg, B.R., Singh, J.M. and Singh, J. 2012. Enhancing water productivity through on-farm resource conservation technology in Punjab agriculture. Agric. Eco. Res. Rev., 25: 79-85.

13.Lybbert, T.J., Magnan, N., Spielman, D.J., Bhargava, A.K. and Gulati, K. 2018. Targeting technology to increase smallholder profits and conserve resources: experimental provision of laser land-levelling services to Indian farmers. Eco. Dev. Cul. Change, 66(2): 265-306.

14.Naresh, R.K., Gupta, R.K., Kumar, A., Prakesh, S., Tomar, S.S., Singh, A., Rathi, R.C., Misra, A.K. and Singh, M. 2011. Impact of laser land leveller for enhancing water productivity in Western Uttar Pradesh. Int. J. Agric. Engg., 4(2): 133-147.

15.Naresh, R.K., Singh, S.P., Misra, A.K., Tomar, S.S., Kumar, P., Kumar, V. and Kumar, S. 2014b. Evaluation of the laser levelled land levelling technology on crop yield and water use productivity in Western Uttar Pradesh. Af. J. Agric. Res., 9(4): 473-478.

16.Rickman, J.F. 2002. Manual for laser land levelling, Rice-Wheat Consortium Technical Bulletin Series 5. New Delhi-110 012, India: Rice-Wheat Consortium for the Indo-Gangetic Plains, 24.

17.Sapkal, S., Kamble, B.H., Kumar, P., Kar, A. and Jha, G.K. 2019. Impact of laser land levelling in rice-wheat systems of the North-Eastern indo-gangetic plains of India. J. Pharmacognosy and Phytochemistry, 8(1): 764-769.

18.Singh, A., Bishnoi, D.K., Kumar, N. and Kumar, R. 2020. Resource use Efficiency in Wheat under different Techniques in Haryana. Indian J. Eco. Dev., 16(SS): 260-266.

19.Singh, T. 2013. An Economic Evaluation of Laser Land Levelling Technology In Punjab. M.Sc. thesis submitted to PAU, Ludhiana, Punjab