Shet, V. B.; Sanil, N.; Bhat, M.; Naik, M.; Mascarenhas, L. N.; Goveas, L. C.; Rao, C. V.; Ujwal, P.; Sandesh, K.; Aparna, A. Acid hydrolysis optimization of cocoa pod shell using response surface methodology approach toward ethanol production. Agr. Nat. Resour. 2018, 52, 581-587.