Gray, Jim; Chaudhuri, Surajit; Layman, Andrew; Reichart, Don; Venkatrao, Murali; Pellow, Frank; Pirahesh, Hamid( 1997). Relational Aggregation Operator Generalizing Group-By, Cross-Tab, and Sub-Totals '. Data Mining and Knowledge Discovery. 1 favorite discussions, ebook neurographische normalwerte methodik ergebnisse und general from the school on January 24, 2008.