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REFERENCES

  1. de Vaucouleurs, G., de Vaucouleurs, A., and Corwin, H. G., Jr. 1976, Second Reference Catalogue of Bright Galaxies (Austin: University of Texas Press).
  2. Elmegreen, B. G. 1979, Ap. J., 231, 372.
  3. Elmegreen, D. M. 1979, Ph.D. thesis, Harvard University.
  4. Elmegreen, D. M. 1980a, Ap. J. Suppl., 43, 37.
  5. Elmegreen, D. M. 1980b, Ap. J., 242, 528.
  6. Gerola, H., and Seiden, P. E. 1978, Ap. J., 223, 129.
  7. Hoessel, J. G. 1978, AAS Photo-Bulletin, 17, 10.
  8. Jenkins, R. L., and Farnell, G. C. 1976, J. Photographic Sci., 24, 41.
  9. Jensen, E. B. 1977, Ph.D. thesis, University of Arizona.
  10. Jensen, E. B., Talbot, R. J., and Dufour, R. J. 1981, Ap. J., 243, 716.
  11. Johnson, H. L. 1966, Stars and Stellar Systems, Vol. 7, Nebulae and Interstellar Matter, ed. B. M. Middlehurst and L. H. Aller (Chicago: University of Chicago Press), p. 167.
  12. Kormendy, J. 1977, The Evolution of Galaxies and Stellar Populations, ed. B. M. Tinsley and R. B. Larson (New Haven: Yale University Printing Service), p. 131.
  13. Lin, C. C., and Shu, F. H. 1964, Ap. J., 140, 646.
  14. Mueller, M. W., and Arnett, W. D. 1976, Ap. J., 210, 670.
  15. Pinto, L. 1979, AAS Photo-Bulletin, 21, 6.
  16. Roberts, W. W., Roberts, M. S., and Shu, F. H. 1975, Ap. J., 196, 381.
  17. Sandage, A. 1961, The Hubble Atlas of Galaxies (Washington: The Carnegie Institution of Washington).
  18. Sandage, A. 1975, Stars and Stellar Systems, Vol. 9, Galaxies and the Universe, ed. A. Sandage, M. Sandage, and J. Kristian (Chicago: University of Chicago Press), p. 1.
  19. Schweizer, F. 1976, Ap. J. Suppl., 31, 313.
  20. Schoening, W. E. 1978, AAS Photo-Bulletin, 17, 12.
  21. Weaver, H. 1970, IAU Symposium 39, Interstellar Gas Dynamics, ed. H. Habing (Dordrecht: Reidel), p. 22.
  22. Woltjer, L. 1965, Stars and Stellar Systems, Vol. 5, Galactic Structure, ed. A. Blaauw and M. Schmidt (Chicago: University of Chicago Press), p. 531.
  23. Zwicky, F. 1955, Pub. A.S.P., 67, 232.

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