Algebraic methods in the theory of global properties of the oscillatory equations $y''=q(t)y$

Algebraic methods in the theory of global properties of the oscillatory equations $y''=q(t)y$ http://hdl.handle.net/10338.dmlcz/500167 81 Algebraic methods in the theory of global properties of the oscillatory equations $Y''=Q(t)Y$ http://hdl.handle.net/10338.dmlcz/500166 Algebraic methods in the theory of global properties of the oscillatory equations $Y''=Q(t)Y$ Tue, 14 Jun 2011 13:41:29 GMT