Gap Estimates of the Spectrum of Hill's Equation and Action Variables for KdV

Autor:	Kappeler, T., Mityagin, B.
Zdroj:	Transactions of the American Mathematical Society, 1999 Feb 01. 351(2), 619-646.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/117819 Zobrazit plný text záznamu