1. Allanson J.T. Cooper R. andCowling T.G.(1946).The theory and experimental behaviour of right‐angled junctions in rectangular‐section wave guides.IEE Proc.177–187. doi:10.1049/ji‐3‐2.1946.0028.
2. Van Nostrand series in Electronics and Communications;Altman J.L.,1964
3. The Synthesis of Symmetrical Waveguide Circulators
4. Branner G.R. Kumar B.P. andThomas D.G.Jr.(1995).Design of microstrip T junction power divider circuits for enhanced performance.IEEE Conference Rio de Janeiro Brazil(13–16 August 1995).
5. Miniaturized broadband E-tee circulator at X-band