@article{1183535130,
author = {Devinatz, Allen},
title = {The deficiency index problem for ordinary selfadjoint differential operators},
journal = {Bull. Amer. Math. Soc.},
volume = {79},
number = {5},
year = {1973},
pages = { 1109-1127},
language = {en},
url = {http://dml.mathdoc.fr/item/1183535130}
}
Devinatz, Allen. The deficiency index problem for ordinary selfadjoint differential operators. Bull. Amer. Math. Soc., Tome 79 (1973) no. 5, pp. 1109-1127. http://gdmltest.u-ga.fr/item/1183535130/