M. N. Lawal, M. S. Abolarin, A. Nasir and A. N. Musa (2022) “Differential air/fresh charge demand, supply and utilisation in two-stroke spark ignition engines”, International Journal of Automotive and Mechanical Engineering, 14(4), pp. 4769–4584. doi: 10.15282/ijame.14.4.2017.13.0374.