Authors' headline estimates are the Fourier ADL (Table 4); Table A2 (ADL/FMOLS/DOLS) is an explicit robustness check. || 'This study checks the robustness of long-run income and price elasticity estimates in Eq. (1) using the ADL estimator ..., the FMOLS estimator ..., and the DOLS estimator' (p.8, App. A); abstract quotes the Fourier ADL figures: 'The price elasticity is negative and smaller than one in absolute value in the aggregate sector (-0.66), the residential sector (-0.83), and the industrial sector (-0.63), but it is statistically insignificant in the commercial sector.' (p.1).
Tran, N. D., Sahu, N. C., & Kumar, P. (2023): "Estimation of income and price elasticities of Indian electricity demand." The Electricity Journal, 36(5), 107285.