Stone spectra of von Neumann algebras of type $I_{n}$
  The Stone spectrum of a von Neumann algebra is a generalization of the Gelfand spectrum, as was shown by de Groote. In this article we clarify the structure of the Stone spectra of von Neumann algebras of type $I_{n}$. 
Andreas Doering (IAMPh, Fachbereich Mathematik, J. W.   Goethe-Universitaet Frankfurt, Germany)