JOHNSEN, T., BESKE-JANSSEN, P., SUNDTOFT HALD, K. (2024). Investigating Procurement's Role in Transitioning to Circular Economy. NOFOMA.
JOHNSEN, T., MARQUES, L., JOHNSEN, R., BESKE-JANSSEN, P. (2024). Wolves in sheep’s clothing? Transparency in reporting of animal welfare by fashion companies. EurOMA.
JOHNSEN, T., JOHNSEN, R., MARQUES, L., BESKE-JANSSEN, P. (2024). Diffusing sustainability in fashion supply chains and ecosystems. IPSERA.
JOHNSEN, T., MARQUES, L., MIEMCZYK, J., THOMAS RITTER, T., HOWARD, M. (2024). Towards a sustainable procurement maturity model: insights from a 10-year longitudinal case study. IPSERA.
MARQUES, L., JOHNSEN, R., JOHNSEN, T., BESKE-JANSSEN, P. (2023). Hidden in the dark: a study of animal welfare transparency and opacity in fashion supply networks. IPSERA.
JOHNSEN, T., CONSTANT, F., MEQDADI, O. (2023). Scouting for Innovation: Bridging Roles of Scouting Services Providers. EurOMA.
JOHNSEN, T., JOHNSEN, R., MARQUES, L., BESKE-JANSSEN, P. (2023). Hidden in the dark: a study of animal welfare transparency and opacity in fashion supply networks. IPSERA.
CONSTANT, F., JOHNSEN, T., ANDREAS WIELAND, A. (2022). Exploring New Competences for Innovative and Sustainable Procurement: Findings from a Delphi Study. IPSERA Conference 2022.
MEQDADI, O., JOHNSEN, T., CANIATO, F., MIANDAR, T. (2022). Diffusing sustainability in supply networks: from the top down or bottom up? IPSERA 2022.
JOHNSEN, T., CONSTANT, F. (2019). Purchasing ambidexterity: how it contributes to firm’s innovation capabilities. 29th IPSERA conference.
JOHNSEN, T., MIANDAR, T., CANIATO, F. (2019). The role of purchasing in the diffusion of sustainability in supply networks: A systematic literature review., 29th IPSERA conference.
GIANNAKIS, M., PICAUD, K., JOHNSEN, T., & CALVI, R. (2018). Exploring Early Purchasing Involvement in Discontinuous Innovation., 27th IPSERA Conference.
JOHNSEN, T., CONSTANT, F. (2018). Innovated outside: examining enablers of purchasing’s contribution to innovation exploration. 28th IPSERA conference.
JOHNSEN, T., MIKKELSEN, O., WONG, C. (2018). Supply network strategies: findings from the offshore wind power industry., NOFOMA conference.
MEQDADI, O., JOHNSEN, T. (2018). Social Value Creation in Supply Chains Through Procurement: A Case Study on Interaction with Social Enterprises. Production and Operations Management Society (POMS).
CONSTANT, F., JOHNSEN, T. (2018). Purchasing contribution to innovation: A systematic literature review and future research directions. R&D Management Conference.
JOHNSEN, T., MEQDADI, O. (2017). Strategies for Sustainability Diffusion in Supply Networks: Findings from In-Depth Case Studies. 24th EurOMA conference.
JOHNSEN, T., PICAUD, K., CALVI, R., GIANNAKIS, M. (2017). Facilitating the absorption of new supplier’s technological knowledge through early purchasing involvement practices in NPD projects., 26th IPSERA conference.
JOHNSEN, T., CONSTANT, F. (2017). Exploring innovations outside firm’s existing supply network: new challenges for purchasing. 26th IPSERA conference.
MEQDADI, O., JOHNSEN, T., JOHNSEN, R. (2017). Trust building for sustainability diffusion in supply networks. EurOMA Forum 2016.
MEQDADI, O., JOHNSEN, T., JOHNSEN, R. (2014). Strategies for Spreading Sustainability in Supply Networks: Initial Case Study Findings. 23rd Annual IPSERA Conference.
JOHNSEN, T., MIKKELSEN, O. S., & ARLBJORN, S. A. (2014). Going Local: A Trend Towards Insourcing of Production?., 23rd Annual IPSERA Conference.
MIEMCZYK, J., HOWARD, M., & JOHNSEN, T. (2014). Exploring a Natural Resource Based View of Closed Loop Supply Chain Management (CLSCM)., 21st International Annual EurOMA Conference.
JOHNSEN, T., & MIKKELSEN, O. S. (2013). The State of Purchasing and Supply Management Research in the Nordic Countries: Analysis of Nordic Contributions to the Field., 22nd IPSERA Conference.
JOHNSEN, T., JAN, F., & SAUVAGE, T. (2013). Les perspectives de développement durable de la fonction Achats., Séminaire Programme Fusion CO2 « Réalités et perspectives pour une supply chain durable ».
JOHNSEN, T., PICAUD, K., & CALVI, R. (2013). Discontinuous Innovation (DI): A review of definitions, theoretical perspectives and measures – towards an empirical study of the role of the purchasing department in DI.., XXIIème conférence de l'AIMS.
JOHNSEN, T. (2012). Reflections on publishing case study based research., Séminaire de Recherche "Les jeudis de la Recherche".
JOHNSEN, T., TRAN, M.-H., MIEMCZYK, J., ROWE, F., & SAUVAGE, T. (2012). Purchasing centralization: Drivers, change management and impacts., 21st International Conference IPSERA.
MEQDADI, O., JOHNSEN, T., JOHNSEN, R., MIEMCZYK, J. (2012). Improving sustainability in supply chains: An SME perspective. 21st International Conference IPSERA.
JOHNSEN, T., CALVI, R., & PHILLIPS, W. (2012). Discontinous innovation: A challenge for purchasing., First Research Colloquium on Innovation in Business Networks (IBeN).
JOHNSEN, R., JOHNSEN, T., MIEMCZYK, J., MEQDADI, O., SAUVAGE, T. (2011). Sustainable supply chains and SMEs. 18th EurOMA Conference.
MIEMCZYK, J., & JOHNSEN, T. (2011). Sustainable purchasing and supply management: a review of definitions and measures at dyad, chain and network levels of analysis., First CR3 Conference "The Power of Responsibility".
JOHNSEN, T., CALVI, R., & PHILLIPS, W. (2011). Purchasing and supplier involvement in discontinuous innovation: a literature review., 20th Annual IPSERA Conference.
MIEMCZYK, J., JOHNSEN, T., KARJALAINEN, K., SALMI, A., & CANIATO, F. (2011). Global sourcing: Linking category characteristics to the geographical scope of sourcing., 20th Annual IPSERA Conference.
JOHNSEN, T., JOHNSEN, R., & LEE, C.-J. (2010). Towards a managerial model for supplier relationship evaluation., 26th IMP Conference.
MIEMCZYK, J., & JOHNSEN, T. (2010). Sustainability in purchasing and supply: Defining the territory., 19th Annual IPSERA Conference.
JOHNSEN, T., NALDI, L., HERTZ, S., HULTMAN, J., & JOHNSEN, R. (2010). Exploring the effects of internationalisation on supplier integration under different degrees of market dynamism., 22nd NOFOMA Conference.
JOHNSEN, T., DICKINSON, G., & HARLAND, C. (2010). Evidence based purchasing: Does evidence make any difference to purchasing decisions?., 19th Annual IPSERA Conference.
JOHNSEN, T., & LEWIS, M. (2009). Supplier Involvement in the Development of the A380 Super Jumbo., 18th Annual IPSERA Conference.
JOHNSEN, R., JOHNSEN, T., HERTZ, S., & HULTMAN, J. (2009). Global sourcing development at IKEA – A case study., 25th IMP Conference.
MIEMCZYK, J., JOHNSEN, T., & BERNARDIN, E. (2009). Developing a green supplier maturity model: Concepts, application and limits., 18th Annual IPSERA Conference.
JOHNSEN, T., MIEMCZYK, J., & MOINARD, C. (2009). Case study: Public procurement in France., 4th International Research Study of Public Procurement (IRSPP) Workshop.
MIEMCZYK, J., HOWARD, M., & JOHNSEN, T. (2007). Exploring supply strategy and through-life management in the UK defence industry., 14th International Annual EurOMA Conference.