Benchmarking the solar dynamo with Maxima

Here, http://arxiv.org/pdf/0811.4061v2 is the paper where the essential part 
of the code is described.     The whole consideration is divided for two 
cases. As the ?rst case I explore the largest free decay modes in the sphere 
which is submerged in vacuum. This problem has the analytical solution given 
by the spherical Bessel functions.  As the second case I test the simple ?? 
dynamo in the solar convection zone with the tachocline included (more about 
solar dynamo is here http://www.scholarpedia.org/article/Solar_dynamo)
At my blog http://vvpi.blogspot.com/ I put the animation for this model.

regards
V