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Geiger H.W., Müller W. (1928). Elektronenzählrohr zur Messung schwächster Aktivitäten (Electron counting tube for the measurement of the weakest radioactivities). Naturwissenschaften (The Sciences)16 (31) (Springer: Berlin/Heidelberg). ISSN: 0028-1042. DOI: 10.1007/BF01494093.
H. Geiger, J.M. Nutall (1911). The ranges of the α particles from various radioactive substances and a relation between range and period of transformation. Philosophical Magazine Series 6 22 (130). DOI: 10.1080/14786441008637156.
worldcat.org
Geiger H.W., Müller W. (1928). Elektronenzählrohr zur Messung schwächster Aktivitäten (Electron counting tube for the measurement of the weakest radioactivities). Naturwissenschaften (The Sciences)16 (31) (Springer: Berlin/Heidelberg). ISSN: 0028-1042. DOI: 10.1007/BF01494093.