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- [2] The estimation of the radium content of radio-active luminous compounds. PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON, 1922, 34 : 0027 - 0032
- [3] On the presence of radio-active matter in ordinary substances PROCEEDINGS OF THE CAMBRIDGE PHILOSOPHICAL SOCIETY, 1904, 12 : 391 - 397
- [5] The number of radio-active transformations as determined by analysis of the observations. PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON, 1922, 34 : 0108 - 0113