A history and evaluation of System R

Donald D. Chamberlin, Franco Putzolu, Patricia Griffiths Selinger, Mario Schkolnick, Donald R. Slutz, Irving L. Traiger, Bradford W. Wade, Robert A. Yost, Morton M. Astrahan, Michael W. Blasgen, James N. Gray, W. Frank King (+4 others)
1981 Communications of the ACM  
doi:10.1145/358769.358784 fatcat:m4435ac4djhkdhwlydcgskaivm