TY - BOOK A1 - Watzlawick, Paul A1 - Weakland, J. A1 - Fisch, R. T1 - Change. Principles of Problem Formation and Problem Resolution. New York (Norton) 1974. Y1 - 1974 N1 - Ex libris Marco Bacciagaluppi ER - TY - BOOK A1 - Watzlawick, Paul A1 - Beavin, J. H. A1 - Jackson, D. D. T1 - Pragmatics of Human Communication. A Study of Interactional Patterns, Pathologies, and Paradoxes. New York (Norton) 1967. Y1 - 1967 N1 - Ex libris Marco Bacciagaluppi ER -