Autor:	Schmitt, Waldo L., Gazin, C. Lewis, Rappleye, Howard S., Diehl, William W., Brickwedde, F. G., McComb, H. E., Taylor, J. H., Levy, Samuel, Rehder, Harald A., Fenton, William N., Hoffman, James I., Setzler, F. M., Sherman, K. L., Davis, Raymond, Neumann, Frank, Gazin, C. L.
Zdroj:	Journal of the Washington Academy of Sciences, 1947 Dec . 37(12), 436-444.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/24530931 Zobrazit plný text záznamu