Combining Graphical Models and PCA for Statistical Process Control. - Roland Fried; Ursula Gather; Michael Imhoff; Melanie Keller; Vivian Lanius (COMPSTAT, 2002)

Dimension Reduction for Physiological Variables Using Graphical Modeling. - Michael Imhoff; Roland Fried; Ursula Gather; Vivian Lanius (AMIA, 2003)

Robust online signal extraction from multivariate time series. - Vivian Lanius; Ursula Gather (Comput. Stat. Data Anal., 2010)