@article{LiesenkoetterBrastZimmermannetal.2012,
  author    = {Liesenk{\"o}tter, B. and Brast, C. and Zimmermann, J. and Schulte, K.},
  title     = {"One size does not fit all!" - Ein kontingenztheoretischer Ansatz zur organisatorischen Umsetzung von Compliance auf Basis einer empirischen Analyse in der Versicherungswirtschaft},
  series = {Zeitschrift f{\"u}r Versicherungswesen},
  volume    = {63},
  journal   = {Zeitschrift f{\"u}r Versicherungswesen},
  number    = {23},
  pages     = {771 -- 777},
  year      = {2012},
  language  = {de}
}
@article{OPUS4-4576,
  title     = {140 Jahre im historischen Vergleich: Krisen am deutschen Aktienmarkt (mit Rainer Baule, Bart Frijns und Alireza Tourani-Rad)},
  series = {Die Bank, 3/2010},
  journal   = {Die Bank, 3/2010},
  pages     = {8 -- 12},
  year      = {2010},
  language  = {de}
}
@article{KestingGerstlbergerBaaken2016,
  author    = {Kesting, Tobias and Gerstlberger, Wolfgang and Baaken, Thomas},
  title     = {A benefit segmentation approach for innovation-oriented university-business collaboration},
  series = {Journal of Technology Transfer (Special Issue: University-Business Collaboration in Europe: Current Trends and Challenges)},
  journal   = {Journal of Technology Transfer (Special Issue: University-Business Collaboration in Europe: Current Trends and Challenges)},
  issn      = {1741-5276},
  year      = {2016},
  language  = {en}
}
@article{GerstlbergerKestingBaaken2016,
  author    = {Gerstlberger, Wolfgang and Kesting, Tobias and Baaken, Thomas},
  title     = {A benefit segmentation approach for innovation-oriented university-business collaboration.},
  series = {International Journal of Technology Management},
  journal   = {International Journal of Technology Management},
  issn      = {0267-5730},
  pages     = {1 -- 23},
  year      = {2016},
  language  = {en}
}
@article{BaakenKesting2018,
  author    = {Baaken, Thomas and Kesting, Tobias},
  title     = {A benefit seg­mentation approach for innovation-oriented university-business collaboration},
  series = {International Journal of Technology Management},
  volume    = {76},
  journal   = {International Journal of Technology Management},
  number    = {1/2},
  issn      = {1741-5276},
  doi       = {10.1504/IJTM.2018.088702},
  pages     = {58 -- 80},
  year      = {2018},
  language  = {en}
}
@article{OPUS4-4569,
  title     = {A Customer-Based Stochastic Valuation Approach for Growth Companies},
  series = {The Icfai Journal of Marketing Management 8, 2/2009},
  journal   = {The Icfai Journal of Marketing Management 8, 2/2009},
  pages     = {57 -- 71},
  year      = {2009},
  language  = {en}
}
@article{BueckerKraemerArnold2012,
  author    = {B{\"u}cker, Michael and Kr{\"a}mer, Walter and Arnold, Matthias},
  title     = {A Hausman test for non-ignorability},
  series = {Economics Letters},
  volume    = {114},
  journal   = {Economics Letters},
  number    = {1},
  doi       = {10.1016/j.econlet.2011.08.025},
  pages     = {23 -- 25},
  year      = {2012},
  language  = {en}
}
@article{TipVosPetersetal.2021,
  author    = {Tip, Barbara and Vos, Frederik G.S. and Peters, Esmee and Delke, Vincent},
  title     = {A Kraljic and competitive rivalry perspective on hospital procurement during a pandemic (COVID-19): a Dutch case study},
  series = {Journal of Public Procurement},
  journal   = {Journal of Public Procurement},
  doi       = {10.1108/JOPP-11-2020-0081},
  year      = {2021},
  abstract  = {Purpose Procurement professionals widely use purchasing portfolio models to tailor purchasing strategies to different product groups' needs. However, the application of these approaches in hospitals and the impact of a pandemic shock remain largely unknown. This paper aims to assess hospital purchasers' procurement strategies during the COVID-19 pandemic, the effects of factor-market rivalry (FMR) on strategies and the effectiveness of purchasing portfolio categorizations in this situation. Design/methodology/approach This qualitative study of hospital purchasing in the Netherlands is supported by secondary data from official government publications. Semi-structured interviews were conducted with 13 hospital purchasers at large hospitals. An interpretative approach is used to analyze the interviews and present the results. Findings The findings reveal that product scarcity forces purchasers to treat them as (temporary) bottleneck items at the hospital level. The strategies adopted largely aligned with expected behavior based on Kraljic's commodity management model. Adding the FMR perspective to the model helped to further cluster crisis strategies into meaningful categories. Besides inventory management, increasing supply, reducing demand and increasing resource coordination were the other common strategies. An important finding is that purchasers and governments serve as gatekeepers in channeling FMR, thereby reducing potential harmful competition between and within hospitals. Social implications The devastating experience of the COVID-19 pandemic is unveiling critical weaknesses of public health-care provision in times of crisis. This study assesses the strategies hospital purchasers apply to counteract shortages in the supply chain. The findings of this study emphasize the importance of gatekeepers in times of crisis and present strategies purchasers can take to assure the supply of resources. Originality/value No research has been conducted on purchasing portfolio models and FMR implications for hospitals during pandemics. Therefore, the authors offer several insights: increasing the supply risk creates temporary bottleneck strategies, letting purchasers adopt a short-term perspective and emphasizing the high mobility of commodities in the Kraljic commodity matrix. Additionally, despite more collaboration uncovered in other studies regarding COVID-19, strong rivalry arose at the beginning of the pandemic, leading to increased competition and less collaboration. Given such increased FMR, procurement managers and governments become important gatekeepers to balance resource allocation during pandemics both within and between hospitals.},
  language  = {en}
}
@article{RupprechtSchweinberger2009,
  author    = {Rupprecht, M. and Schweinberger, A.},
  title     = {A Note on Housing Wealth and Private Consumption},
  series = {Journal of Academic Research in Economics},
  volume    = {1},
  journal   = {Journal of Academic Research in Economics},
  number    = {2},
  pages     = {119 -- 128},
  year      = {2009},
  language  = {en}
}
@article{NaumannAntonBocketal.2003,
  author    = {Naumann, J. and Anton, G. and Bock, A. and Grabmayr, P. and Helbing, K. and Kiel, B. and Menze, D. and Michel, T. and Proff, S. and Sauer, M. and Schumacher, M. and Speckner, T. and Weihofen, W. and Zeitle, G.},
  title     = {A photon tagging system for the GDH-Experiment at ELSA},
  series = {Nuclear Instruments and Methods in Physics Research},
  journal   = {Nuclear Instruments and Methods in Physics Research},
  number    = {A 498},
  pages     = {211 -- 219},
  year      = {2003},
  language  = {en}
}