Second Order Universal Filter Using Four Terminal Floating Nullor (FTFN). - Ashish Ranjan 002; Subrahmanyam Perumalla; Ravi Kumar; John Vista; Shantikumar Yumnam (J. Circuits Syst. Comput., 2019)

Ultra-low Power Current Comparator. - Subrahmanyam Perumalla; Pradip Mandal (ISCAS, 2023)