1# References resolved by explicit DOI (Crossref /works/{doi} lookup) or documented as DOI-less (JSTOR stable URL).2- {key: varian1980, topic: sales, doi: null, jstor: "https://www.jstor.org/stable/1805363", author: "Varian, Hal R.", title: "A Model of Sales", journal: "American Economic Review", volume: 70, issue: 4, pages: "651-659", year: 1980}3- {key: feenstra1994, topic: indices, doi: null, jstor: "https://www.jstor.org/stable/2117971", author: "Feenstra, Robert C.", title: "New Product Varieties and the Measurement of International Prices", journal: "American Economic Review", volume: 84, issue: 1, pages: "157-177", year: 1994}4- {key: midrigan2011, topic: menu_costs, doi: "10.3982/ECTA6735"}5- {key: diewert2022, topic: indices, doi: "10.1080/07350015.2020.1816176"}6- {key: hortacsu2004, topic: search, doi: "10.1162/0033553041382184"}7- {key: competitionbureau2023, topic: canada, doi: null, url: "https://competition-bureau.canada.ca/en/how-we-foster-competition/education-and-outreach/canada-needs-more-grocery-competition", author: "{Competition Bureau Canada}", title: "Canada Needs More Grocery Competition: Retail Grocery Market Study Report", year: 2023, type: report}8- {key: cakir2021, topic: shrinkflation, doi: "10.1002/agr.21724"}9- {key: hoppe2024, topic: shrinkflation, doi: "10.1093/icc/dtae035"}10