Deutsch

Klinger, Julia N. ; Vormbrock, Björn (2003)
Contextual boolean logic : how did it develop?
Buch, Bibliographie

Englisch

Vormbrock, Björn (2006)
The structure of double Boolean algebras.
Technische Universität Darmstadt
Dissertation, Bibliographie

Vormbrock, Björn (2003)
Congruence relations on double Boolean algebras.
Buch, Bibliographie

Vormbrock, Björn ; Wille, Rudolf (2003)
Semiconcept and Protoconcept Algebras: the Basic Theorems.
Buch, Bibliographie