APL INFO: A system for automatic documentation. - Piero Dell'Orco; Laura Bartolo (APL, 1974)

AQL: An APL based system for accessing and manipulating data in a Relational Database System. - Francesco Antonacci; Piero Dell'Orco; V. N. Spadavecchia (APL, 1976)

Using Knowledge of a Data Base World in Interpreting Natural Language Queries. - Piero Dell'Orco; V. N. Spadavecchia; Margaret King (IFIP Congress, 1977)

Two Semantic Worlds: A Data Base System with Provision for Natural Language Input. - Piero Dell'Orco; Margaret King; V. N. Spadavecchia (IJCAI, 1977)

Structure and Implementation of a Relational Query Language for the Problem Solver. - Francesco Antonacci; Piero Dell'Orco; V. N. Spadavecchia; Antonio Turtur (VLDB, 1977)

AQL: A Problem-Solving Query Language for Relational Data Bases. - Francesco Antonacci; Piero Dell'Orco; V. N. Spadavecchia; Antonio Turtur (IBM J. Res. Dev., 1978)

AQL - A Relational Data Base Management System and its Geographical Applications. - Francesco Antonacci; Laura Bartolo; Piero Dell'Orco; V. N. Spadavecchia (Data Base Techniques for Pictorial Applications, 1979)

A Territorial Database Management System (Abstract). - Francesco Antonacci; Piero Dell'Orco; Antonio Turtur (SIGMOD Conference, 1982)

An APL based relational data management language using SYSTEM R as data server. - Francesco Antonacci; Piero Dell'Orco (APL, 1985)

A Form-Based Office Information System. - Francesco Antonacci; Piero Dell'Orco; M. R. Logozzo; Maria Teresa Pazienza (BTW, 1985)