Conditionally Monotone Functions and Three Sperner Type Conditions. - Christoph Bandt; Gustav Burosch; Klaus-Dieter Drews (J. Inf. Process. Cybern., 1981)

Maximale Familien bezüglich einer verallgemeinerten Sperner-Bedingung. - Gustav Burosch; Klaus-Dieter Drews (J. Inf. Process. Cybern., 1986)