Katherine A. Morris Jeffrey F. Naughton Yatin P. Saraiya Jeffrey D. Ullman Allen Van Gelder YAWN! (Yet Another Window on NAIL!). 28-43 1987 http://sites.computer.org/debull/87DEC-CD.pdf 10 IEEE Data Eng. Bull. 4 db/journals/debu/debu10.html#MorrisNSUG87