Performance benefits of polymer modified bitumen binders for thin surfacings 2019 KL Neaylon, LC van den Kerkhof, JP Wu, PR Herrington WSP Opus Research WSP Opus (Opus International Consultants) TFP Henning University of Auckland D Rogers, P Karan, I Turner, G Arnold, D Alexander Road Science Downer NZ Transport Agency research report 655 Contracted research organisation – Opus International Consultants Ltd.