1. Martinelli, R. C.; Boelter, L. M. K.: An analytical prediction of superimposed free and forced viscous convection in a vertical pipe. Univ. Calif. Berkeley Publ. Eng. 24 (1942) 393–400
2. Martinelli, R. C.; Boelter, L. M. K.: Heat transfer and pressure drop for a fluid flowing in the viscous region through a vertical pipe. Trans. AIChE 38 (1942) 493–530
3. Pigford, R. L.: Nonisothermal flow and heat transfer inside vertical tubes. Chem. Eng. Progr. Symp. Ser. 51 (1955) 79–92
4. Rosen, E. M.; Hanratty, T. J.: Use of boundary-layer theory to predict the effect of heat transfer on the laminar flow field in a vertical tube with a constant temperature wall. AIChE J. 7 (1961) 112–123
5. Marner, W. J.: Combined free and forced laminar nonNewtonian convection in a vertical tube. Ph.D. Thesis Univ. of South Carolina 1969