Recent Studies of Saturn's Rings. Lumme, K. ; Esposito, L. W. ; Irvine, W. M. ; Baum, W. A. ; Ferguson, H. M. ; Jones, S. E. ; Martin, L. S. ; Thompson, D. T. ; Benton, W. ; Harris, A. ; Birch, P. V. ; Stuart, J. B. ; Wren, G. Abstract Publication: Bulletin of the American Astronomical Society Pub Date: September 1977 Bibcode: 1977BAAS....9..620L