Feng, Y., Feng, Y., & Han, K. (2012). An accurate evaluation of geometric view factors for modelling radiative heat transfer in randomly packed beds of equally sized spheres. International Journal of Heat and Mass Transfer, 55(23-24), pp. 6374-6383. doi:10.1016/j.ijheatmasstransfer.2012.06.025

Feng, Yuntian, Y.T Feng, and K. Han. "An Accurate Evaluation of Geometric View Factors for Modelling Radiative Heat Transfer in Randomly Packed Beds of Equally Sized Spheres." International Journal of Heat and Mass Transfer 55, no. 23-24 (2012): 6374-6383.

Feng, Yuntian, Y.T Feng, and K. Han. "An Accurate Evaluation of Geometric View Factors for Modelling Radiative Heat Transfer in Randomly Packed Beds of Equally Sized Spheres." International Journal of Heat and Mass Transfer 55.23-24 (2012): 6374-6383.