1. VDI Heat Atlas, 11th ed., Springer, Berlin, 2013 (Chapter G6).
2. Archival correlations for average heat transfer coefficients for non-circular and circular cylinders and spheres in cross-flow;Sparrow;Int. J. Heat Mass Transfer,2004
3. Grenzschicht-Theorie;Schlichting,2006
4. A Heat Transfer Textbook;Lienhardt,2011
5. H. Reiher, Der Wärmeübergang von strömender Luft an Rohre und Rohrbündel in Kreuzstrom, VDI-Forschungsheft 269 (1925), 47 (in German).