1. A Second-generation current conveyor and its applications;Sedra;IEEE Trans. Circuit Theory,1970
2. Realization of current conveyor all-pass transfer function using operational amplifiers;Genin,1968
3. RC active all-pass sections;Deliyannis;Electron. Lett.,1969
4. An operational amplifier all-pass network;Aronhime,1969
5. RC active all-pass networks using a differential-input operational amplifier;Dutta,1969