Magdolen, Ulla, Janna Krol, Sumito Sato, Markus M. Mueller, Stefan Sperl, Achim Krüger, Manfred Schmitt, and Viktor Magdolen. 2002. “Natural Inhibitors of Tumor-Associated Proteases”. Radiology and Oncology 36 (2). https://radioloncol.com/index.php/ro/article/view/1404.