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Nandakishor T.M, Girigan G., Champatan V., Sukesh A., Aravind P.V.  2022.  Agroforestry in Shade Coffee Plantations as an Emission Reduction Strategy for Tropical Regions: Public Acceptance and the Role of Tree Banking. Frontiers in Energy Research.

Jaiganesh N., Kuo P.-C, Champatan V., Girigan G., AjithKumar R., Aravind P.V..  2022.  Negative emission power plants: Techno-economic analysis of a biomass-based integrated gasification solid oxide fuel cell/gas turbine system for power, heat, and biochar co-production—part 2. Frontiers in Energy Research.

Vijay V., Adlak K., Payyanad S., Sreedharan V., Girigan G., vanderVoort T.S, Malarvizhi P., Yi S., Gebert J., Aravind P.V.  2022.  Review of Large-Scale Biochar Field-Trials for Soil Amendment and the Observed Influences on Crop Yield Variations. Frontiers in Energy Research.

Girigan G., Manjula M..  2022.  Vanavibhavasekharanam: Upajeevanavum Velluvilikalum. Aranyam. 42(7):27-31.