1. Fractionation of calcium isotopes in carbonate precipitation;Stahl;Earth Planet. Sci Letters,1968
2. Die Isotopenzusammensetzung von natürlichem Calcium;Hirt;Helv. Phys. Acta,1964
3. Search for natural variations in calcium isotope abundance;Stahl;Earth Planet. Sci. Letters,1968
4. Mass spectrometric determination of calcium isotope variations;Miller;Geochem. Int.,1966
5. 40Ca/44Ca and18O/16O isotope ratios in some calcareous rocks;Artemov;Geochem. Int.,1966