Zettl, Anton.
Sturm-Liouville theory - Providence, R.I. American Mathematical Society c2005. - xi, 328 p.
0821839055 (alk. paper)
Sturm-Liouville equation.
517.98 ZET
Sturm-Liouville theory - Providence, R.I. American Mathematical Society c2005. - xi, 328 p.
0821839055 (alk. paper)
Sturm-Liouville equation.
517.98 ZET