Παραπομπή APA

Rockland ,C. (1975). Hypoellipticity and Eigenvalue Asymptotics. Springer-Verlag.

Παραπομπή Chicago Style

Rockland ,C. Hypoellipticity and Eigenvalue Asymptotics. Berlin: Springer-Verlag, 1975.

Παραπομπή MLA

Rockland ,C. Hypoellipticity and Eigenvalue Asymptotics. Springer-Verlag, 1975.