Liski, E., Nordhausen, Klaus, Oja, H. and Ruiz-Gazen, Anne (2016) Combining Linear Di-mension Reduction Subspaces. In: Recent Advances in Robust Statistics: Theory and Applications Agostinelli, C., Basu, A., Filzmoser, Peter and Mukherjee, D. (eds.) Springer. Chapter Combining Linear Di-mension Reduction Subspaces. pp. 131-149. ISBN 978-81-322-3643-6