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Lutz D. Schmadel: Dictionary of Minor Planet Names. Fifth Revised and Enlarged Edition. Hrsg.: Lutz D. Schmadel. 5. Auflage. Springer Verlag, Berlin, Heidelberg 2003, ISBN 3-540-29925-4, S.186, doi:10.1007/978-3-540-29925-7_7105 (englisch, 992 S., Originaltitel: Dictionary of Minor Planet Names. Erstausgabe: Springer Verlag, Berlin, Heidelberg 1992): “6543 P-L. Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld at Palomar.”