Mustast reedest on saanud must november. Nädalaid kestvad sooduskampaaniad lörtsivad päeva erilisustKivi, E.LP : [Eesti Päevalehe laupäevaleht] arileht.delfi.ee2025 / lk. 8-10 https://dea.digar.ee/article/lp/2025/11/21/11.1 https://arileht.delfi.ee/artikkel/120418517/mustast-reedest-on-saanud-must-november-nadalaid-kestvad-sooduskampaaniad-lortsivad-paeva-erilisust Poodide sooduskaup tervisele hästi ei mõju : [kommenteerib TTÜ toitumisteadlane Tagli Pitsi]Erala, SiiriPostimees2011 / lk. 20 Quantity discount algorithm in an E-commerce environmentHilmola, Olli-Pekka KristianProceedings of International Conference on Communication and Computational Technologies : ICCCT 20212021 / p. 437–446 https://doi.org/10.1007/978-981-16-3246-4_35 The Croatian High Administrative Court upholds the decision of the Croatian Competition Authority concerning a rebate scheme applied by a mobile phone operator and its distributors (VIPnet) [Electronic resource]Svetlicinii, Alexandre-Competitions2012