Autor:	Jenkin, C. F., Lehmann, G. D.
Zdroj:	Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1929 Aug 01. 125(796), 83-119.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/95250 Zobrazit plný text záznamu