L.F.G., López (Apr–Jun 2019). “The concept of elasticity and strategies for teaching it in introductory courses of economics”. Semestre Económico22 (51): 149–167. doi:10.22395/seec.v22n51a7.
Chen, Xudong (October 1, 2017). “Elasticity as Relative Slopes: A Graphical Approach to Linking the Concepts of Elasticity and Slope”. The American Economist62 (2): 258–267. doi:10.1177/0569434516682713.