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Verchovsky, A. B; Fisenko, A. V.; Semjonova, L. F.; Wright, I. P. and Pillinger, C. T.
(2004).
URL: http://www.lpi.usra.edu/meetings/lpsc2004/pdf/1673...
Abstract
Comparison of carbon isotope variations in grain size fractions of presolar diamonds separated from three meteorites (Efremovka, Boriskino and Krymka) suggest that diamond from various parts of solar nebular have had diffrent C isotope signature.