REFERENCES
- Bergh, S. van den:
1960, Publ. David Dunlap Obs. II nr. 6
- Burbidge, E.M., Burbidge, G.R.: 1975, in
"Galaxies and the Universe" Vol. IX of Stars and Stellar Systems,
eds. A. and M. Sandage and J. Kristian, p 81
- Freeman, K.C.:
1970, Astrophys. J. 160, 811
- Hodge, P.W.:
1974, Publ. Astr. Soc. Pac. 86, 845
- Huchtmeier, W.:
1975, Astron. Astrophys. 45, 259
- Kruit, P.C. van der, Allen, R.J.:
1976, Ann. Rev. Astron. Astrophys. 14, 417
- Morgan, W.W.:
1958, Publ. Astr. Soc. Pac. 70, 364
- Morgan, W.W.:
1959, Publ. Astr. Soc. Pac. 71, 394
- Roberts, M.S.:
1975, I.A.U. Symp. no.69, "Dynamics of Stellar
Systems", ed. A. Hayli, p 331
- Roberts, M.S., Rots, A.H.:
1973, Astron. Astrophys. 26, 483
- Rogstad, D.H., Shostak, G.S.:
1972, Astrophys. J. 176, 315
- Sandage, A.: 1975, in
"Galaxies and the Universe", Vol. IX of Stars and
Stellar Systems, eds. A. and M. Sandage and J. Kristian, p 1
- Sandage, A., Freeman, K.C., Stokes, N.R.:
1970, Astrophys. J. 160, 831
- Searle, L.:
1971, Astrophys. J. 168, 327
- Shostak, G.S.:
1977, Astron. Astrophys. 58, L31
- Tully, R.B., Fisher, J.R.:
1977, Astron. Astrophys. 54, 661
- Vaucouleurs, G. de: 1977, in
"The Evolution of Galaxies and Stellar Populations",
ed. B.M. Tinsley and R.B. Larson, p 43
- Vaucouleurs, G. de, Vaucouleurs, A. de, Corwin,
H.G.:
1976, Second Reference Catalogue of Bright Galaxies,
University of Texas Press, Austin
- Webster, B.L.: 1977, in
"Topics in Interstellar Matter", ed. H. van Woerden,
p 243