A bipolar fuzzy p-competition graph based ARAS technique for prioritizing COVID-19 vaccines. - Deva Nithyanandham; Felix Augustin (Appl. Soft Comput., 2023)

Energy based bipolar intuitionistic fuzzy digraph decision-making system in selecting COVID-19 vaccines. - Deva Nithyanandham; Felix Augustin; David Raj Micheal; Nagarajan Deivanayagam Pillai (Appl. Soft Comput., 2023)

A multi-bipolar fuzzy graph and its centrality measure based decision making system for healthcare waste treatment method selection. - Deva Nithyanandham; Felix Augustin (Appl. Soft Comput., 2025)