Alessandro Balducci, PhD, is professor of Planning and Urban Policies, and Vice-Rector of the Politecnico di Milano. He has been President of AESOP, and he is currently Chair of the Italian Society of Urbanists (SIU). He is responsible for the Strategic plan of the Province of Milan, and he is an advisor for plans and urban projects in Italy and abroad. He has been a Visiting Professor in various universities in France, Finland, China, USA and Switzerland. He has authored a number of books, articles and essays, related to strategic and participatory planning. Raine Mäntysalo, DSc, is professor of strategic urban planning and Vice Head of the Department of Real Estate, Planning and Geoinformatics at Aalto University School of Engineering, Finland. Related to his professorship, his theoretical interests concentrate on pragmatist and dialectical planning theory and developmental planning research. His recent publications include research on the relationship between planning theory and democracy theory, agonism and power analytics in planning processes.

• Introduction.- Planning as Agonistic Communication in a Trading Zone - Re-examining Lindblom’s Partisan Mutual Adjustment.- “Trading Zone”: A Useful Concept for some Planning Dilemmas.- Ideas Competitions: Contemporary Urban Planning in Urban Regions and the Concept of Trading Zones.- Trading between Land Use and Transportation Planning – The Kuopio Model.- SoftGIS Development Process as a Trading Zone: Challenges in Implementing a Participatory Planning Support System.- A Neighbourhood Laboratory for the Regeneration of a Marginalized Suburb in Milano: Toward the Creation of a Trading Zone.- The Locality of Boundary Practices.-Trading with Enemies? The Trading Zone Approach in Successful Planning Processes in Sicily.- Place As Trading Zone. A Controversial Path of Innovation for Planning Theory and Practice.- Trading Zone and the Complexity of Planning.- Trading Zone as a Sensitizing Concept in Planning Research.-Conclusions and Afterthoughts.- Trading Plans.

Alessandro Balducci, PhD, is professor of Planning and Urban Policies, and Vice-Rector of the Politecnico di Milano. He has been President of AESOP, and he is currently Chair of the Italian Society of Urbanists (SIU). He is responsible for the Strategic plan of the Province of Milan, and he is an advisor for plans and urban projects in Italy and abroad. He has been a Visiting Professor in various universities in France, Finland, China, USA and Switzerland. He has authored a number of books, articles and essays, related to strategic and participatory planning. Raine Mäntysalo, DSc, is professor of strategic urban planning and Vice Head of the Department of Real Estate, Planning and Geoinformatics at Aalto University School of Engineering, Finland. Related to his professorship, his theoretical interests concentrate on pragmatist and dialectical planning theory and developmental planning research. His recent publications include research on the relationship between planning theory and democracy theory, agonism and power analytics in planning processes.

• Introduction.- Planning as Agonistic Communication in a Trading Zone - Re-examining Lindblom’s Partisan Mutual Adjustment.- “Trading Zone”: A Useful Concept for some Planning Dilemmas.- Ideas Competitions: Contemporary Urban Planning in Urban Regions and the Concept of Trading Zones.- Trading between Land Use and Transportation Planning – The Kuopio Model.- SoftGIS Development Process as a Trading Zone: Challenges in Implementing a Participatory Planning Support System.- A Neighbourhood Laboratory for the Regeneration of a Marginalized Suburb in Milano: Toward the Creation of a Trading Zone.- The Locality of Boundary Practices.-Trading with Enemies? The Trading Zone Approach in Successful Planning Processes in Sicily.- Place As Trading Zone. A Controversial Path of Innovation for Planning Theory and Practice.- Trading Zone and the Complexity of Planning.- Trading Zone as a Sensitizing Concept in Planning Research.-Conclusions and Afterthoughts.- Trading Plans.

Alessandro Balducci, PhD, is professor of Planning and Urban Policies, and Vice-Rector of the Politecnico di Milano. He has been President of AESOP, and he is currently Chair of the Italian Society of Urbanists (SIU). He is responsible for the Strategic plan of the Province of Milan, and he is an advisor for plans and urban projects in Italy and abroad. He has been a Visiting Professor in various universities in France, Finland, China, USA and Switzerland. He has authored a number of books, articles and essays, related to strategic and participatory planning. Raine Mäntysalo, DSc, is professor of strategic urban planning and Vice Head of the Department of Real Estate, Planning and Geoinformatics at Aalto University School of Engineering, Finland. Related to his professorship, his theoretical interests concentrate on pragmatist and dialectical planning theory and developmental planning research. His recent publications include research on the relationship between planning theory and democracy theory, agonism and power analytics in planning processes.

• Introduction.- Planning as Agonistic Communication in a Trading Zone - Re-examining Lindblom’s Partisan Mutual Adjustment.- “Trading Zone”: A Useful Concept for some Planning Dilemmas.- Ideas Competitions: Contemporary Urban Planning in Urban Regions and the Concept of Trading Zones.- Trading between Land Use and Transportation Planning – The Kuopio Model.- SoftGIS Development Process as a Trading Zone: Challenges in Implementing a Participatory Planning Support System.- A Neighbourhood Laboratory for the Regeneration of a Marginalized Suburb in Milano: Toward the Creation of a Trading Zone.- The Locality of Boundary Practices.-Trading with Enemies? The Trading Zone Approach in Successful Planning Processes in Sicily.- Place As Trading Zone. A Controversial Path of Innovation for Planning Theory and Practice.- Trading Zone and the Complexity of Planning.- Trading Zone as a Sensitizing Concept in Planning Research.-Conclusions and Afterthoughts.- Trading Plans.