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Füger, A.; Bruggmann, S.; Frei, R.; Leis, A.; Dietzel, M.; Mavromatis, V. (2019). The role of pH on Cr(VI) partitioning and isotopic fractionation during its incorporation in calcite. Geochimica et cosmochimica acta, 265, pp. 520-532. Elsevier Science 10.1016/j.gca.2019.07.047
Ring, J.; Akdis, C.; Lauener, R.; Schäppi, G.; Traidl-Hoffmann, C.; Akdis, M.; Ammann, W.; Behrendt, H.; Bieber, T.; Biedermann, T.; Bienenstock, J.; Blaser, K.; Braun-Fahrländer, C.; Brocknow, K.; Buters, J.; Crameri, R.; Darsow, U.; Denburg, J.A.; Eyerich, K.; Frei, R.; ... (2014). Global Allergy Forum and Second Davos Declaration 2013 Allergy: Barriers to cure - challenges and actions to be taken. Allergy, 69(8), pp. 978-982. Wiley-Blackwell 10.1111/all.12406
Fenner, L.; Gagneux, S.; Kabuya, G.; Stucki, D.; Kabuayi, J. P.; Borrell, S.; Frei, R.; Burri, C.; Kalemwa, D.; Egger, M.; Okiata, J. P. (2011). Mycobacterium Tuberculosis Genetic Diversity and Drug Resistance Conferring Mutations in the Democratic Republic of the Congo. East African Medical Journal, 88(12), pp. 409-415. Kenya Medical Association
Hofmann, Beda; Helfer, M.; Diamond, Larryn William; Villa, Igor Maria; Frei, R.; Eikenberg, J. (2004). Topography-driven hydrothermal breccia mineralization of Pliocene age at Grimsel Pass, Aar massif, Central Swiss Alps. Schweizerische Mineralogische und Petrographische Mitteilungen, 84, pp. 271-302. Stäubli
Shotyk, W.; Weiss, D.; Kramers, J.D.; Frei, R.; Cheburkin, A.K.; Gloor, M.; Reese, S. (2001). Geochemistry of the peat bog at Etang de la Gruère, Jura Mountains, Switzerland, and its record of atmospheric Pb and lithogenic trace metals (Sc, Ti, Y, Zr, and REE) since 12,370 14C yr BP. Geochimica et cosmochimica acta, 65(14), pp. 2337-2360. Elsevier Science 10.1016/S0016-7037(01)00586-5
Boni, M.; Maio, G. Di; Frei, R.; Villa, I. M. (2000). Lead isotopic evidence for a mixed provenance for Roman water pipes from Pompeii. Archaeometry, 42(1), pp. 201-208. Wiley-Blackwell Publishing Ltd. 10.1111/j.1475-4754.2000.tb00876.x
Frei, R.; Blenkinsop, T.G.; Schoenenberg, R. (1999). Geochronology of the late Archaean Razi and Chilimanzi suites of granites in Zimbabwe; implications for the late Archaean tectonics of the Limpopo Belt and Zimbabwe Craton. South African journal of geology, 102(1), pp. 55-63. Geological Society of South Africa
Shotyk, W.; Weiss, D.; Appleby, P. G.; Cheburkin, A. K.; Frei, R.; Gloor, M.; Kramers, J. D.; Reese, S.; van der Knaap, W. O. (1998). History of Atmospheric Lead Deposition Since 12,370 14C yr BP from a Peat Bog, Jura Mountains, Switzerland. Science, 281(5383), pp. 1635-1640. American Association for the Advancement of Science 10.1126/science.281.5383.1635
Buchholz, P.; Herzig, P.; Friedrich, G.; Frei, R. (1998). Granite-hosted gold mineralization in the Midlands greenstone belt: a new type of low-grade gold deposit in Zimbabwe. Mineralium deposita, 33(5), pp. 437-460. Springer 10.1007/s001260050162
Frei, R.; Nägler, Thomas; Schönberg, R.; Kramers, Jan Dirk (1998). Re-Os, Sm-Nd, U-Pb, and stepwise lead leaching isotope systematics in shear-zone hosted gold mineralization: genetic tracing and age constraints of crustal hydrothermal activity. Geochimica et cosmochimica acta, 62(11), pp. 1925-1936. Pergamon 10.1016/S0016-7037(98)00111-2
Holzer, L.; Frei, R.; Barton, J.M.; Kramers, J.D. (1998). Unraveling the record of successive high grade events in the Central Zone of the Limpopo Belt using Pb single phase dating of metamorphic minerals. Precambrian research, 87(1-2), pp. 87-115. Elsevier 10.1016/S0301-9268(97)00058-2
Mahoney, J. J.; Frei, R.; Tejada, M. L. G.; Mo, X. X.; Leat, P. T.; Nägler, Thomas (1998). Tracing the Indian Ocean Mantle Domain Through Time: Isotopic Results from Old West Indian, East Tethyan, and South Pacific Seafloor. Journal of petrology, 39(7), pp. 1285-1306. Oxford University Press 10.1093/petroj/39.7.1285
Schaller, M.; Steiner, O.; Studer, I.; Frei, R.; Kramers, Jan Dirk (1997). Pb stepwise leaching (PbSL) dating of garnet - addressing the inclusion problem. Schweizerische Mineralogische und Petrographische Mitteilungen, 77, pp. 113-121. Stäubli 10.5169/seals-58473
Nägler, Thomas; Frei, R. (1997). "Plug in" Os distillation. Schweizerische Mineralogische und Petrographische Mitteilungen, 77, pp. 123-127. Stäubli 10.5169/seals-58474
Frei, R.; Villa, Igor Maria; Nägler, Thomas; Kramers, Jan Dirk; Przybylowicz, W.J.; Prozesky, V.M.; Hofmann, Beda; Kamber, B.S. (1997). Single mineral dating by the PbPb step-leaching method: Assessing the mechanisms. Geochimica et cosmochimica acta, 61(2), pp. 393-414. Elsevier Science 10.1016/S0016-7037(96)00343-2
Nägler, Thomas; Kramers, Jan Dirk; Kamber, B. S.; Frei, R.; Prendergast, M. D. A. (1997). Growth of subcontinental lithospheric mantle beneath Zimbabwe started at or before 3.8 Ga: Re-Os study on chromites. Geology, 25(11), p. 983. Geological Society of America 10.1130/0091-7613(1997)025<0983:GOSLMB>2.3.CO;2
Hofmann, Beda; Frei, R. (1996). Age constraints of reduction spot formation from Permian red beds sediments, northern Switzerland, inferred from U-Th-Pb systematics. Schweizerische Mineralogische und Petrographische Mitteilungen, 76(2), pp. 235-244. Stäubli 10.5169/seals-57700
Frei, R. (1996). The extent of inter-mineral isotope equilibrium: a systematic bulk U-Pb and Pb step-leaching (PbSL) isotope study of individual minerals from the Tertiary granite of Jerissos (northern Greece). European journal of mineralogy, 8, pp. 1175-1189. E. Schweizerbart'sche Verlagsbuchhandlung (Nägele u. Obermiller)
Dhar, S.; Frei, R.; Kramers, Jan Dirk; Nägler, Thomas; Kochhar, N. (1996). Sr, Pb and Nd isotope studies and their bearing on the petrogenesis of the Jalor and Siwana complexes, Rajasthan, India. Journal of the Geological Society of India, 48, pp. 151-160. Springer (India) Private Ltd.
Blenkinsop, T. G.; Frei, R. (1996). Archean and Proterozoic mineralization and tectonics at the Renco Mine (northern marginal zone, Limpopo Belt, Zimbabwe). Economic geology - bulletin of the Society of Economic Geologists, 91(7), pp. 1225-1238. Economic Geology Pub. Co. 10.2113/gsecongeo.91.7.1225
Frei, R.; Pettke, Thomas (1996). Mono-sample Pb-Pb dating of pyrrhotite and tourmaline: Proterozoic vs. Archean intracratonic gold mineralization in Zimbabwe. Geology, 24(9), pp. 823-826. Geological Society of America 10.1130/0091-7613(1996)024<0823:MSPPDO>2.3.CO;2
Vinyu, M. L.; Jelsma, H. A.; Frei, R. (1996). Timing between granitoid emplacement and associated gold mineralization: examples from the ca. 2.7 Ga Harare–Shamva greenstone belt, northern Zimbabwe. Canadian journal of earth sciences, 33(7), pp. 981-992. Canadian Science Publishing 10.1139/e96-074
Holzer, L.; Kamber, B.S.; Kramers, Jan Dirk; Frei, R. (1995). The tectono-metamorphic event at 2 Ga in the Limpopo Belt and the resetting behaviour of chronometers at high temperature. Geological Survey of Namibia. Communications, 10, pp. 129-140. Ministry of Mines and Energy
Frei, R.; Biino, G. G.; Prospert, C. (1995). Dating a Variscan pressure-temperature loop with staurolite. Geology, 23(12), pp. 1095-1098. Geological Society of America 10.1130/0091-7613(1995)023<1095:DAVPTL>2.3.CO;2
