Radebaugh, R. (2007), "Historical Summary of Cryogenic Activity Prior to 1950", in Timmerhaus, Klaus D.; Reed, Richard P. (eds.), Cryogenic Engineering, International Cryogenics Monograph Series, New York, New York: Springer, pp.3–27, Bibcode:2007cren.book....3R, doi:10.1007/0-387-46896-x_1, ISBN978-0-387-46896-9.
Radebaugh, R. (2007), "Historical Summary of Cryogenic Activity Prior to 1950", in Timmerhaus, Klaus D.; Reed, Richard P. (eds.), Cryogenic Engineering, International Cryogenics Monograph Series, New York, New York: Springer, pp.3–27, Bibcode:2007cren.book....3R, doi:10.1007/0-387-46896-x_1, ISBN978-0-387-46896-9.