Woo, Kai Yin, and Shu Kam Lee. “Price Convergence in the UK Supermarket Chains: Evidence from Nonlinear Cointegration Approach”. Economics and Business Letters 7, no. 3 (October 10, 2018): 115–125. Accessed April 19, 2024. https://reunido.uniovi.es/index.php/EBL/article/view/12696.