Generating Concept Hierarchies from User Queries. - Bob Wall; Neal Richter; Rafal A. Angryk (Data Mining: Foundations and Practice, 2008)

Minimal data sets vs. synchronized data copies in a schema and data versioning system. - Bob Wall; Rafal A. Angryk (PIKM@CIKM, 2011)

Storing Long-Lived Concurrent Schema and Data Versions in Relational Databases. - Bob Wall; Rafal A. Angryk (ADBIS (2), 2014)

Cryptographically Enforced Orthogonal Access Control at Scale. - Bob Wall; Patrick Walsh (SCC@AsiaCCS, 2018)