1. A.Blumlein “Improvements in or relating to high frequency electrical conductors or radiators ” British patent No. 515684 (1938).
2. Slot aerials and their relations to complementary wire aerials;Booker H. G.;JIEE (London),1946
3. Slot feeders and slot aerials;Bailey C. E. G.;JIEE (London),1946
4. The input impedance of a slit antenna;Mushiake Y.;Joint Convention Record of Tohoku Sections of IEE and IECE of Japan,1948
5. Input impedance of centre‐fed slot aerials near half‐wave resonance;Putman J. L.;JIEE (London),1948