Recent Developments and Results on Double Beta Decays with Crystal Scintillators and HPGe Spectrometry oleh Alessandro Di Marco, Alexander S. Barabash, Pierluigi Belli, Rita Bernabei, Roman S. Boiko, Viktor B. Brudanin, Fabio Cappella, Vincenzo Caracciolo, Riccardo Cerulli, Dmitry M. Chernyak, Fedor A. Danevich, Antonella Incicchitti, Dmytro V. Kasperovych, Vladislav V. Kobychev, Sergey I. Konovalov, Matthias Laubenstein, Vittorio Merlo, Francesco Montecchia, Oksana G. Polischuk, Denys V. Poda, Vladimir N. Shlegel, Vladimir I. Tretyak, Vladimir I. Umatov, Yan V. Vasiliev, Mykola M. Zarytskyy