1. RCA Tunnel Diode Manuel: RCA_1963_Tunnel_Diode_Manual.pdf
2. Advanced diode pumped solid state lasers (DPSSLs): near term trends and future prospects;Krukpe,1999
3. Design of 2.5 GHz broad bandwidth microwave bandpass filter at operating frequency of 10 GHz using HFSS;Jasim,2018
4. Fundamentals of RF/Microwave Bandpass Filter;Nwajana,2021