Factor analysis of Galactic globular clusters on structural parameters
  Principal component method is used to study galactic globular clusters in 7- and 8-axis space of structural parameters. It is shown that the manifold properties of clusters with this set of parameters is determined mainly by two independent factors. This result may be useful for the theory of formation and evolution of clusters. 
O. Eigenson, O. Yatsyk (Astronomical Observatory of Ivan Franko   National University of L'viv)