1. “Compact nonthermal sources in M87,”;Burbidge;Astrophys. J.,1970
2. P. A. G. Scheuer, “Radio galaxies and quasi-stellar sources,” Plasma Astrophysics, pp. 262–306, Enrico Fermi Summer School Course 39, ed. P. A. Sturrock (1967) and in Ref. 10.
3. “Bubble model of extragalactic radio sources,”;Gull;Nature,1973
4. “Inertial confinement of extended radio sources,”;DeYoung;Nature,1967
5. “The dynamics and structure of inertially confined plasma clouds,”;Christiansen;Mon. Nat. Roy. Astron. Soc.,1969