$C^{12}$ shape isomers in the chiral field solitons approach
  The variational approach to the problem of seeking axially symmetric solitons with B=12 is presented. The numerically obtained local minima of the skyrmion mass functional and baryon charge distributions are pointing to the possible existence of shape isomers in $C^{12}$ spectra in the the framework of the original Skyrme model. Theoretical analysis reveals the exclusiveness of each individual state manifested in the structure of the solitons from the given topological sector B=12. 
V.A. Nikolaev, Yu.V. Chubov, O.G. Tkachev