E. Kotter and M. Langer, “Integrating HIS-RIS-PACS: The Freiburg experience,” European Radiology, Vol. 8, pp. 1707–1718, 1998.
 B. I. Reiner, E. L. Siegel, and J. A. Carrino, “Workflow optimization: Current trends and future directions,” Journal of Digital Imaging, Vol. 15, pp. 141–152, 2002.
 B. I. Reiner and E. L. Siegel, “The cutting edge: Strategies to enhance radiologist workflow in a filmless/paper- less imaging department,” Journal of Digital Imaging, Vol. 15, pp. 178–190, 2002.
 R. Shaw “Integrating a PACS/RIS solution with new working practices to improve care,” Hospital Healthcare Europe (HHE), No. R11–R14, 2005/2006.
 C. Mariani, A. Tronchi, L. Oncini, O. Pirani, and R. Murri, “Analysis of the X-rays working flow in two diagnostic imaging departments with and without a RIS/ PACS system,” Journal of Digital Imaging, Vol. 19, No. (Suppl 1), pp. 18–28, 2006.