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Relational database systems : analysis and comparison
Schmidt, Joachim W., (1983)
Die organisatorische Gestaltung von mikrocomputergestützten Datenbanksystemen
Renner, Gerhard, (1984)
Principles of database systems
Ullman, Jeffrey D., (1980)
Fundamental concepts of programming systems
Ullman, Jeffrey D., (1976)
Introduction to automata theory, languages, and computation
Hopcroft, John E., (1979)