ALAM, M. M. M.; ALIM, M. A. A.; CHOWDHURY, M. M. K. M. K. Free Convection from a Vertical Permeable Circular Cone with Pressure Work and Non-Uniform Surface Temperature. Nonlinear Analysis: Modelling and Control, v. 12, n. 1, p. 21–32, 25 Jan.2007.