In situ identification of a CAI candidate in 81P/Wild 2 cometary dust by confocal high resolution synchrotron X-ray fluorescence - Schmitz, Sylvia; Brenker, Frank E.; Schoonjans, Tom; Vekemans, Bart; Silversmit, Geert; Vincze, Laszlo; Burghammer, Manfred; Riekel, Christian (Geochimica et Cosmochimica Acta, 2009)