APA (7th ed.) Citation

Helffer, B., & Nier, F. (2005). Hypoelliptic estimates and spectral theory for fokker-planck operators and witten laplacians. Springer.

Chicago Style (17th ed.) Citation

Helffer, Bernard, and Francis Nier. Hypoelliptic Estimates and Spectral Theory for Fokker-planck Operators and Witten Laplacians. Berlin Heidelberg: Springer, 2005.

MLA (8th ed.) Citation

Helffer, Bernard, and Francis Nier. Hypoelliptic Estimates and Spectral Theory for Fokker-planck Operators and Witten Laplacians. Springer, 2005.