https://research.ibm.com/publications/the-onion-technique-indexing-for-linear-optimizatin-queries
The Onion Technique: Indexing for Linear Optimizatin Queries for SIGMOD 2000 - IBM Research
The Onion Technique: Indexing for Linear Optimizatin Queries for SIGMOD 2000 by Yuan-Chi Chang et al.
the onion