Searches for neutrinoless resonant double electron captures at LNGS
  Several experiments were performed during last years at underground (3600 m w.e.) Laboratori Nazionali del Gran Sasso (LNGS) of the INFN (Italy) to search for resonant 2$\varepsilon0\nu$ captures in 96Ru, 106Cd, 136Ce, 156Dy, 158Dy, 180W, 184Os, 190Pt with the help of HP Ge semiconductor detectors, and ZnWO4 and 106CdWO4 crystal scintillators. No evidence for r-2$\varepsilon0\nu$ decays was found, and only T_{1/2} limits were established in the range of 10^{14}-10^{21} yr. 
P. Belli (1), R. Bernabei (1,2), R. S. Boiko (3), V. B. Brudanin (4),   F. Cappella (5,6), V. Caracciolo (7,8), R. Cerulli (...
nucl-ex