↑ E. Rutherford and H. Geiger (1908) "An electrical method of counting the number of α particles from radioactive substances," Proceedings of the Royal Society (London), Series A, vol. 81, no. 546, pages 141-161.
↑ See also: H. Geiger (1913) "Über eine einfache Methode zur Zählung von α- und β-Strahlen" (On a simple method for counting α- und β-rays), Verhandlungen der Deutschen physikalische Gesellschaft (Proceedings of the German Physical Society), volume 15, pages 534-539.
↑ H. Geiger and W. Müller (1928). "Elektronenzählrohr zur Messung schwächster Aktivitäten" (Electron counting tube for the measurement of the weakest radioactivities), Die Naturwissenschaften (The Sciences), vol. 16, no. 31, pages 617-618.
