R.K. WEBSTER, ISOTOPE DILUTION ANALYSISAdvances in Mass Spectrometry#R##N#Proceedings of a Joint Conference Organised by the Hydrocarbon Research Group, Institute of Petroleum, and A.S.T.M. Committee E.14 and Held in the University of London, 24th–26th September, 1958. pp. 103- 119 ,(1959) , 10.1016/B978-0-08-009210-2.50013-4