Authors: Grahn, Y Gutierrez, PR

Citation: Y. Grahn et Pr. Gutierrez, Silurian and Middle Devonian Chitinozoa from the Zapla and Santa Barbara Ranges, Tarija Basin, northwestern Argentina, AMEGHINIANA, 38(1), 2001, pp. 35-50

Authors: Bergstrom, SM Finney, SC Xu, C Palsson, C Wang, ZH Grahn, Y

Citation: Sm. Bergstrom et al., A proposed global boundary stratotype for the base of the Upper Series of the Ordovician System: The Fagelsang section, Scania, southern Sweden, EPISODES, 23(2), 2000, pp. 102-109

Authors: Lindstrom, M Floden, T Grahn, Y Hagenfeldt, S Ormo, J Sturkell, EFF Tornberg, R

Citation: M. Lindstrom et al., The Lower Palaeozoic of the probable impact crater of Hummeln, Sweden, GFF, 121, 1999, pp. 243-252

Authors: Paris, F Grahn, Y Nestor, V Lakova, I

Citation: F. Paris et al., A revised chitinozoan classification, J PALEONTOL, 73(4), 1999, pp. 549-570

Authors: Boucot, AJ Benedetto, JL Grahn, Y Melo, JHG Sanchez, TM Waisfeld, BA

Citation: Aj. Boucot et al., South American marine Silurian communities, WORLD REG G, 11, 1999, pp. 841-848

Authors: Grahn, Y

Citation: Y. Grahn, Lower Silurian (Llandovery-Middle Wenlock) Chitinozoa and biostratigraphy of the mainland of Sweden, GFF, 120, 1998, pp. 273-283