Rockland ,C. (1975). Hypoellipticity and Eigenvalue Asymptotics. Springer-Verlag.
Chicago Style aipamenaRockland ,C. Hypoellipticity and Eigenvalue Asymptotics. Berlin: Springer-Verlag, 1975.
MLA aipamenaRockland ,C. Hypoellipticity and Eigenvalue Asymptotics. Springer-Verlag, 1975.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.