@article{01883698,
title = {On the domain of selfadjoint extension of the product of Sturm-Liouville differential operators.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {2003},
year = {2003},
pages = {695-709},
doi = {10.1155/S0161171203008020},
zbl = {1055.47045},
language = {en},
url = {http://dml.mathdoc.fr/item/01883698}
}
Ibrahim, Sobhy El-Sayed. On the domain of selfadjoint extension of the product of Sturm-Liouville differential operators.. International Journal of Mathematics and Mathematical Sciences, Tome 2003 (2003) pp. 695-709. doi : 10.1155/S0161171203008020. http://gdmltest.u-ga.fr/item/01883698/