Li, Fengsen. “Retracted: How to Solve the Moral Dilemma of Helping a Fallen Old Man: An Economic Point of View”. Business, Management and Economics Engineering 11, no. 2 (September 13, 2013): 209-223. Accessed November 29, 2024. https://tede.vgtu.lt/index.php/BMEE/article/view/3652.