Jager, E. M. D. (1974). Spectral theory and asymptotics of differential equations: Proceedings of the Scheveningen Conference on Differential Equations, the Netherlands, September 3-7, 1973. Amsterdam : New York: North-Holland Pub. Co., American Elsevier Pub. Co.
Παραπομπή Chicago StyleJager, E. M. De. Spectral Theory and Asymptotics of Differential Equations: Proceedings of the Scheveningen Conference On Differential Equations, the Netherlands, September 3-7, 1973. Amsterdam : New York: North-Holland Pub. Co., American Elsevier Pub. Co, 1974.
Παραπομπή MLAJager, E. M. De. Spectral Theory and Asymptotics of Differential Equations: Proceedings of the Scheveningen Conference On Differential Equations, the Netherlands, September 3-7, 1973. Amsterdam : New York: North-Holland Pub. Co., American Elsevier Pub. Co, 1974.