3. Getting to yes: negotiating agreement without giving in Fisher, Roger, 1922-2012 New York, NY : Penguin Books, 2011. LAW314 GEB202
4. Beyond reason: using emotions as you negotiate Fisher, Roger, 1922-2012. New York : Penguin Books, 2006. GEB202
5. Game theory - successful negotiation in purchasing: requirements, incentives and award Pfeiffer, Christoph, Wiesbaden : Springer, 2023. BUS318
6. System of negotiations: game theory and behavioral economics in procurement - the guide for professionals Schumann, René, 1978- Wiesbaden, Germany : Springer Fachmedien Wiesbaden GmbH, [2023] BUS318