Double beta decay experiments: past and present achievements
  A brief history of double beta decay experiments is presented. The best currently running experiments (NEMO-3 and CUORICINO) and their latest results are described. The best measurements and limits for the $2\nu\beta\beta$, $0\nu\beta\beta$ and $0\nu\chi^{0}\beta\beta$ are summarized. 
Alexander Barabash