Graf, Hans F. The Atmosphere in the Earth System, MPI for Meteorology, Max Planck Society;
JAS-59-1490.pdf (Publisher version), 2MB
Castanheira, J. M., Graf, H. F., DaCamara, C. C., & Rocha, A. (2002). Using a physical reference frame to study global circulation variability. Journal of the Atmospheric Sciences, 59, 1490-1501. doi:10.1175/1520-0469(2002)059<1490:UAPRFT>2.0.CO;2.