Rahman, Md. M. M., et al. “Effect of the Presence of a Heat Conducting Horizontal Square Block on Mixed Convection Inside a Vented Square Cavity”. Nonlinear Analysis: Modelling and Control, vol. 14, no. 4, Oct. 2009, pp. 531-48, https://doi.org/10.15388/NA.2009.14.4.14472.