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J.  McNeill, ?Diplachne and Leptochloa (Poaceae) in North America?, Brittonia, Bd. 31, S. 399-404, 1979.

J.  McNeill, ?The future of numerical methods in plant systematics?, in Numerical Taxonomy, J.  Felsenstein, Hrsg. Berlin, Heidelberg: Springer-Verlag, 1983, S. 47-52.