Xiao Guo, T. H. and Zhou, B. (2021) “Research on Flow Boundary of Different Kinds of Heavy Oil with Different Fluidities”, International Journal of Social Science and Economics Invention, 1(01), p. 5 t0 10. Available at: http://ijssei.in/index.php/ijssei/article/view/2 (Accessed: 18 May 2024).