Injection of magnetic helicity and chirality change in sunspot penumbral filaments Jiangtao Su National Astronomical Observatories of China Helicity Thinkshop.
Helicity as a Constraint on the Solar Dynamo Alexei A. Pevtsov If you worry about publicity Do not speak of Current Helicity Jan Stenflo.
Injection of m a gnetic helicity and chirality c hange in sunspot penumbral filaments
