M. Ober:
"Lp-Minkowski valuations on Lq-spaces";
Journal of Mathematical Analysis and Applications, 414 (2014), 1; 68 - 87.
http://dx.doi.org/10.1016/j.jmaa.2013.12.048Electronic version of the publication:
http://www.sciencedirect.com/science/article/pii/S0022247X13011487