Linear differential operators /
Naimark, M. A.
Linear differential operators / translated by e. r. dawson. english translation. ed. by w. n. everitt. - volúmenes
Ecuaciones diferenciales lineales
QA372 / N34
Linear differential operators / translated by e. r. dawson. english translation. ed. by w. n. everitt. - volúmenes
Ecuaciones diferenciales lineales
QA372 / N34