Kartikeya Raina, Omdeep Gupta. How can the ‘big 4’ UK supermarkets (i.e. Morrisons, Asda, Tesco and Sainsbury’s) effectively compete with discount supermarkets (e.g. Lidl, Aldi). (CEMJP) [Internet]. 2022 Apr. 30 [cited 2024 Nov. 22];30(2):37-42. Available from: http://journals.kozminski.cem-j.org/index.php/pl_cemj/article/view/557