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