@article{GDZPPN001173480,
title = {Discrete Inverse Sturm-Liouville Problems. I. Uniqueness for Symmetric Potentials.},
journal = {Numerische Mathematik},
volume = {26},
year = {1976},
pages = {249-256},
zbl = {0343.65035},
url = {http://dml.mathdoc.fr/item/GDZPPN001173480}
}
Hald, O.H. Discrete Inverse Sturm-Liouville Problems. I. Uniqueness for Symmetric Potentials.. Numerische Mathematik, Tome 26 (1976) pp. 249-256. http://gdmltest.u-ga.fr/item/GDZPPN001173480/