@article{1183501642,
author = {MacDonald, J. K. L.},
title = {On bounds for parameters $n$-noded solutions of Sturm-Liouville equations},
journal = {Bull. Amer. Math. Soc.},
volume = {45},
number = {11},
year = {1939},
pages = { 164-171},
language = {en},
url = {http://dml.mathdoc.fr/item/1183501642}
}
MacDonald, J. K. L. On bounds for parameters $n$-noded solutions of Sturm-Liouville equations. Bull. Amer. Math. Soc., Tome 45 (1939) no. 11, pp. 164-171. http://gdmltest.u-ga.fr/item/1183501642/