J.P. Sharma and Avanish Kumar Singh (2025) “Potential and Constraints for Setting Up Biogas Plants in Nainital District”, Indian Journal of Extension Education, 38(1-2), pp. 75–89. Available at: https://epubs.icar.org.in/index.php/IJEE/article/view/161492 (Accessed: 15 July 2026).