S. H. Bhavnani and A. E. Bergles, “Effect of Surface Geometry and Orientation on Laminar Natural Convection from a Vertical Flat Plate with Transverse Roughness Elements,” International Journal of Heat Mass Transfer, Vol. 33, No. 5, 1990, pp. 965-981. doi:10.1016/0017-9310(90)90078-9
 P. E. Rubbert, “The Emergence of Advanced computational methods in the aerodynamic Design of commercial Transport aircraft,” Proceedings of International symposium on Computational Fluid Dynamics, Vol. 1, No. 4, 1984, pp. 42-48.
 H. P. Kavehpour, M. Faghri and Y. Asako, “Effects of Compressibility and Rarefaction on Gaseous Flows in Microchannels,” An International Journal of Computation and Methodology, Vol. 32, No. 7, 1997, pp. 41-47. doi: 10.1080/10407789708913912
 D. D. Gray and A. Giorgini, “The Validity of the Boussinesq Approximation for Liquids and Gases,” International Journal of Heat and Mass Transfer, Vol. 19, No. 5, pp. 545-551, 1976. doi:10.1016/0017-9310(76)90168-X
 B. Yazicio?lu and H. Yüncü, “Optimum Fin Spacing of Rectangular Fins on a Vertical Base in Free Convection Heat Transfer,” Journal of Heat Mass Transfer, Vol. 44, No. 1, pp. 11-21. doi: 10.1007/s00231-006-0207-6