New papers were added to the CvGmt Preprint Server - http://cvgmt.sns.it/ Title: Heisenberg isoperimetric problem. The axial case Author: Monti, Roberto http://cvgmt.sns.it/papers/mon07/ Title: Positive solutions of anisotropic Yamabe--type equations in $R^n$ Author: Monti, Roberto Author: Morbidelli, Daniele http://cvgmt.sns.it/papers/monmor07/