J. Gölz, W. Goujavin, F. Bauer, and W. Haas. Sealing systems - challenges for the future, page 685–699. Fachverband Fluidtechnik im VDMA e. V., (2012)461.
L. Hörl, U. Nißler, and W. Haas. Society of Tribologists and Lubrication Engineers annual meeting and exhibition 2010, page 203-207. Curran, (2010)387.
S. Neuberger, E. Bock, W. Haas, and K. Lang. Sealing systems - challenges for the future, page 557–571. Fachverband Fluidtechnik im VDMA e. V., (2012)468.
G. Baitinger, and W. Haas. Sealing systems - cutting edge technology in the smallest envelope, page 341-350. Fachverband Fluidtechnik im VDMA e. V., (2010)398.
M. Baumann, F. Bauer, and W. Haas. Papers presented at 23rd International Conference Fluid Sealing, Manchester, United Kingdom: 2nd-3rd March 2015, page 85-96. BHR Group, (2016)586.
M. Kopp, D. Hofmann, B. Bertsche, C. Heß, and O. Fritz. Proceedings of the 18th International Conference on Engineering Design, volume 10 of ICED11, page 209-220. Design Society, (2011)188.