The Torsional Oscillation and the Timing of the Solar Cycle: Is it Maximum Yet?
Proceedings article published in 2013 by
R. Howe,
Jorgen Christensen-Dalsgaard 
,
F. Hill,
R. Komm,
T. P. Larson,
J. Schou,
M. J. Thompson
,
F. Hill,
R. Komm,
T. P. Larson,
J. Schou,
M. J. Thompson
