Problems of Closest Approximation Connected with the Solution of Linear Differential Equations

Autor:	McEwen, W. H.
Zdroj:	Transactions of the American Mathematical Society, 1931 Oct 01. 33(4), 979-997.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/1989519 Zobrazit plný text záznamu