Konopielko, Łukasz, and Diana Radkova. “Price Dispersion and Online Markets Maturity in Poland”. Acta Universitatis Lodziensis. Folia Oeconomica 3, no. 329 (September 22, 2017): [7]–21. Accessed May 5, 2024. https://czasopisma.uni.lodz.pl/foe/article/view/769.