Kowalski, C. (14 December 2017). Shifting cancer care towards multidisciplinarity: The cancer center certification program of the German Cancer Society. BMC cancer, 17, . doi:10.1186/s12885-017-3824-1

"Shifting cancer care towards multidisciplinarity : The cancer center certification program of the German Cancer Society / Christoph Kowalski, Ullrich Graeven, Christof von Kalle, Hauke Lang, Matthias W. Beckmann, Jens-Uwe Blohmer, Martin Burchardt, Michael Ehrenfeld, Jan Fichtner, Stephan Grabbe, Hans Hoffmann, Heinrich Iro, Stefan Post, Anton Scharl, Uwe Schlegel, Thomas Seufferlein, Walter Stummer, Dieter Ukena, Julia Ferencz and Simone Wesselmann" BMC Cancer .

Kowalski, Christoph. "Shifting Cancer Care Towards Multidisciplinarity: The Cancer Center Certification Program of the German Cancer Society." BMC Cancer 17 (14 December 2017).