Churchill, Stuart W.; Chu, Humbert H.S. (November 1975). "Correlating equations for laminar and turbulent free convection from a vertical plate". International Journal of Heat and Mass Transfer. 18 (11): 1323–1329. Bibcode:1975IJHMT..18.1323C. doi:10.1016/0017-9310(75)90243-4.
Churchill, Stuart W.; Chu, Humbert H.S. (November 1975). "Correlating equations for laminar and turbulent free convection from a vertical plate". International Journal of Heat and Mass Transfer. 18 (11): 1323–1329. Bibcode:1975IJHMT..18.1323C. doi:10.1016/0017-9310(75)90243-4.