Measurement of the mass difference between tritium and helium-3 ions by a high-resolution ion-cyclotron-resonance method Lippmaa, É. T. ; Pikver, R. Ǐ. ; Suurmaa, É. R. ; Past, Ya. O. ; Puskar, Yu. Kh. ; Koppel', I. A. ; Tammik, A. A. Abstract Publication: ZhETF Pisma Redaktsiiu Pub Date: June 1984 Bibcode: 1984ZhPmR..39..529L