Generalised interferometry by correlation
Andreas Fichtner, ETH Zurich, Institute of Geophysics, Zurich, Switzerland, Laurent Stehly, University Grenoble Alpes, ISTerre, Institute of Earth Sciences, Grenoble, France, Laura Ermert, ETH Zurich, Department of Earth Sciences, Institute of Geophysics, Zurich, Switzerland and Christian Boehm, Institute of Geophysics, ETH Zurich, Zurich, Switzerland