Hughston, L P and Jacobs, K C. 1970. Homogeneous Electromagnetic and Massive-Vector Fields in Bianchi Cosmologies. The Astrophysical Journal, 160, pp. 147-152. ISSN 0004-637X [Article]

Hughston, L P and Shepley, L C. 1970. Anisotropic, Multi-Fluid Cosmologies with Hypersurface Orthogonal Velocity Fields. The Astrophysical Journal, 160, pp. 333-336. ISSN 0004-637X [Article]