J.P. SHARMA AND AVANISH KUMAR SINGH. Potential and Constraints for Setting Up Biogas Plants in Nainital District. Indian Journal of Extension Education, India, v. 38, n. 1-2, p. 75–89, 2025. Disponível em: https://epubs.icar.org.in/index.php/IJEE/article/view/161492. Acesso em: 15 jul. 2026.