A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
H. Kragh. "To be or not to be: the early history of H3 and HFormula." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 370.1978 (2012) 5225-5235